portugieser yacht club moon & tide

The fastest and most secure way to protect the watches and jewelry you love.

We've minimized the paperwork and maximized protection, so you can stop worrying about your watches and jewelry and focus on enjoying them.

In most cases, you'll get a personalized quote in seconds and your policy kicks in immediately.

Wherever you are on planet Earth, your watches and jewelry are protected. Rest easy and travel safely.

If you suffer a covered loss, there's no deductible and no gimmicks. Ever.

Each of your watches and jewelry is covered up to 150% of the insured value (up to the total value of the policy).

Popular Searches

In-Depth Tiffany & Co.'s Untapped Watchmaking Potential

Why Jaeger-LeCoultre's Latest Traveling Collection Is Worth Your Time

Recommended Reading Remembering 9/11 Through The Rolex That Is 'Frozen In Time'

Editors’ Picks

How To Wear It The Cartier Tank Cintrée

In-Depth Examining Value And Price Over Time With The ‘No Date’ Rolex Submariner

Watches In The Wild The Road Through America, Episode 1: A Model Of Mass Production

Introducing The IWC Portugieser Yacht Club Moon & Tide

A nautical theme to the extreme..

If you're going to make a watch line up dedicated to the yacht club – which IWC established as a subset of the Portugieser in 2010 – a tide-indicating complication only makes natural sense. (The name was first used, of course, in 1967, for a watch intended to be an all-weather but still club-elegant sports watch.) So, 10 years into the Yacht Club family line, IWC has just announced the new reference IW344001 Portugieser Yacht Club Moon & Tide. Presented in red gold with a shining blue dial and a matching blue rubber strap, this new Portugieser certainly looks the part while debuting IWC's newly developed tide-following complication. 

First things first, with a 44.6mm wide case, the Portugieser Yacht Club Moon & Tide is as large as it is pretty. The Yacht Club line has always done a good job of communicating a blend of both sport and elegance. While the use of a gold case on the Yacht Club Moon & Tide is decidedly foncy, the blue rubber strap does a nice job of striking a boat-ready balance. I especially like the red dial details, the clarity of the overall display, and the splash-ready 30 meters of water resistance. 

Using a newly-developed caliber 82835 manufacture movement, the Yacht Club Moon & Tide offers a brand new feature set that expands upon the dual hemisphere moon phase display that IWC has made strong use of with many of their perpetual calendar models. With a minimal addition of text surrounding the moon phase display, the Yacht Club Moon & Tide also notes the strength of the tides by making a differentiation between spring and neap tides. 

Combine that slight moon phase modification with a novel tide timing indication at six o'clock, and you've got a $34,000 IWC that can help you to better manage the ebb and flow of the tides. While not many of us need a watch that can offer such information, the complication feels both right at home within the Portugieser Yacht Club line up and a fittingly nautical way of saluting the Yacht Club on its 10th anniversary. 

Brand: IWC Model: Portugieser Yacht Club Moon & Tide Reference Number: IW344001

Diameter: 44.6mm Thickness: 14.4mm Case Material: 18k 5N pink gold Dial Color: Blue Indexes: Applied, gold   Lume: Yes. Water Resistance: 30 meters Strap/Bracelet: Blue rubber strap 

Caliber: 82835 Functions: Hours, minutes, seconds, date, moon phase for both hemispheres, and an indication of next high and low tide Power Reserve: 60 hours Winding: Automatic Frequency: 28,800 vph Jewels: 22 

Price: $33,100 Availability: TBD

For more, click here.

Introducing The Vacheron Constantin Overseas Perpetual Calendar Ultra-Thin Skeleton

By Stephen pulvirent

Introducing The Vacheron Constantin La Musique du Temps Les Cabinotiers Grand Complication Split-Seconds Chronograph 'Tempo'

By Jack forster

Introducing The Vacheron Constantin Traditionnelle Tourbillon Chronograph

By James stacey

Introducing The Panerai Luminor Marina '70 Years Of Luminor' Collection (PAM 1117, 1118, & 1119)

Top Discussions

Hands-On The Daniel Roth Tourbillon Rose Gold

Bring a Loupe A Cartier London Decagon, A Rolex Oyster Perpetual With Breguet Numerals, And A Universal Genève 'Polarouter'

Introducing Rolex Announces The First Authorized History Of The Submariner

Last Week’s Top Stories

Finally! The Omega x Swatch MoonSwatch Is Now Available Online

By Jonathan mcwhorter

Watch Spotting Roger Federer Wearing The New Yellow Gold Rolex Le Mans Daytona At The U.S. Open

By Mark kauzlarich

Editors' Picks Our Favorite Watches from Geneva Watch Days 2024

By Hodinkee

Introducing Grand Seiko Recreates The 45GS With The SLGW004 And SLGW005 Limited Editions (Live Pics)

By Tantan wang

Hands-On The Unimatic Modello Uno And Modello Quattro GMTs With Japanese Movements

OUR LONDON STUDIO IS ALMOST HERE – SEE WHAT’S COMING

Yacht rock: the new IWC Portugieser Yacht Club Moon & Tide boasts the brand’s first silicon hairspring

This year has been all about the Portugieser for IWC. At Watches & Wonders Geneva, the Schaffhausen brand unveiled a variety of new colourful dials and interesting designs for the collection – the highlight being the epoch-defining Portugieser Eternal Calendar . At Watches & Wonders Shanghai, the love continues, with IWC bringing the Portugieser back to its roots while also introducing its first movement with a silicon hairspring. For those that don’t know, the design of the original Portugieser ref. 325 from 1939 was inspired by deck observation watches – harking back to the glamour of seafaring and the Age of Exploration . The new IWC Portugieser Yacht Club Moon & Tide IW344002, however, is all about the glamour of recreational yachting, offering an innovative take on a tide indicator.

The original ref. 325 was IWC’s first oversized watch intended for civilians, measuring up at an enormous-for-the-time 41.5mm. The Portugieser Yacht Club Moon & Tide is big by modern standards, too, measuring 44.6mm in diameter and 13.4mm thick. That’s bigger than most pilot’s watches IWC offers – but in this instance, bigger is better, as it allows extra real estate for its namesake complications. More on those in a second. In any case, IWC’s modern Portugieser Yacht Club collection has been home to larger, brassier takes on the Portugieser ever since its introduction in 2010, and the Yacht Club Moon & Tide follows in that tradition.

The Portugieser Yacht Club Moon & Tide was first introduced in 2020 with the red gold ref. IW344001 . This model in stainless steel brings the heft factor down somewhat, while also featuring a better water-resistance rating (100 metres versus the ref. IW344001’s 60 metres). Otherwise, the new stainless steel ref. IW344002’s case features an identical design to its red gold sibling, flaunting a beautifully polished bezel, stout lugs and a crown guard that almost looks like two pushers.

Fans of 2024 Portugieser novelties like the Hand-Wound Tourbillon Day & Night and its mesmerising obsidian black dial will be pleased to hear that the new Portugieser Yacht Club Moon & Tide also sports this stygian tone. In fact, it’s one of only two regular-production Portugiesers to feature this combination of an obsidian black dial and a stainless steel case, the other being the Portugieser Chronograph.

At the 12 o’clock position, one can find a “Double Moon” moonphase indicator, which displays the moon phase as seen from the Northern and Southern Hemispheres, and is accurate for 125 years – not bad. Additionally, it also shows spring and neap tides. A spring tide (which has nothing to do with the season) is the greatest difference between how high the water is at high tide and how low it is at low tide. By the way, if you’ve ever heard the term king tide, that’s just an especially high spring tide. These typically happen at full moon and new moon. A neap tide is the smallest difference in tidal range. Make sense?

Speaking of tides, at the 6 o’clock position, you’ll find the tide indicator, which helps the wearer track the slightly shifting times for high and low tides. High tides occur roughly every 12 hours and 24 minutes – however, the Portugieser Yacht Club Moon & Tide compensates for this thanks to a reduction gear with three wheels, converting the hourly rhythm of normal time-telling into the slower rotation of the tidal disc by rotating the tide disc by 24 minutes between high tides.

In typical IWC fashion, both the tide indicator and Double Moon display are minimalist but highly legible, with subtle pops of contrast provided by lettering in red and blue breaking up the dial’s otherwise monochromatic look. The seconds hand is also tipped in red, while a colour-matched date window can be found at 3 o’clock. It’s classically elegant Portugieser fare.

The movement

The clever display of this Portugieser Yacht Club Moon & Tide IW344002 is all thanks to the new calibre 82836, which is identical to the 2020 model’s calibre 82835 save for one key change: the introduction of a silicon hairspring. To tell the truth, I was surprised to hear that this movement is IWC’s first with a silicon hairspring, considering how prolific the tech is even among brands and movements far less developed than IWC. Of course, the advantages of silicon hairsprings are manifold: silicon is inherently anti-magnetic, thermally stable, doesn’t deform like a traditional hairspring, and doesn’t require lubrication, among other properties.

Some traditionalists say the use of silicon removes some of the artistry from watchmaking – and silicon hairsprings can also be more fragile than traditional steel hairsprings – but I won’t wade into that debate. IWC reckons it’s worth it, otherwise they wouldn’t have updated this movement. Silicon hairspring aside, the calibre 82836 also features IWC’s Pellaton automatic winding system (which utilises ceramic parts – are they sacrilege too?), with a confidence-inspiring 60-hour power reserve.

The bracelet

The Portugieser Yacht Club Moon & Tide IW344002 comes mounted on a three-link steel bracelet with a butterfly clasp. While we’ve seen bracelets of this design offered before on Portugieser models, it’s the first time a bracelet has been offered on this complication, as the ref. IW344001 came on a rubber strap.

The verdict

Most people who are actually part of yacht clubs probably don’t sail their own boats, but there’s something highly appropriate about having complications like a tide indicator and moonphase on a Portugieser Yacht Club. Being stainless steel, it makes it more suitable for ocean-going than its previous red gold incarnation (not that you’d really call this a tool watch). The addition of a silicon hairspring is a nice touch – it’s only something that real enthusiasts will get excited about, but it’s nice – but the big selling point for this watch in my opinion is that its movement compensates for the discrepancy between the tide cycle and the normal 24-hour cycle. This makes it a more user-friendly experience than other tide-tracking watches like the Baume & Mercier Riviera Tideograph .

IWC Portugieser Yacht Club Moon & Tide IW344002 pricing & availability

The IWC Portugieser Yacht Club Moon & Tide IW344002 is available now for purchase. Price: US$22,500, A$35,000, £20,500

THE COLLECTIVE

European Watch Company – Est. 1993

Sailing Away: The IWC Portugieser Yacht Club Moon and Tide Reference IW344001

Published by samuel colchamiro.

View all posts by Samuel Colchamiro

IWC’s Portugieser line of watches has always been recognized as some of the best everyday watches. The model line brings classic layout to a sporty case dimension to form a sort of hybrid timepiece that is equally comfortable in many environments. The Portugieser Yacht Club Moon and Tide, reference IW344001 represents one of the latest additions to the Portugieser family, contributing new complications to the celebrated model line.

The IWC Portugieser collection was introduced in 1939 with the reference 325. Two Portuguese businessmen, Rodrigues and Antonio Teixeira, approached International Watch Company, proposing the construction of a stainless steel watch with marine chronometer precision. Subsequently, the reference 325 was born. Then considered a robust sports piece, the 325 was produced into the 50s, when the output began to sharply decrease for a variety of business related reasons.

Interestingly, IWC made many extra cases for the 325 which remained unused by the end of production. In the 1970’s, a Swiss retailer requested that IWC make a series of pieces utilizing the original cases that remained. The brand agreed, maintaining the original styling of the 325 but updating the movement to the caliber 982, which was significantly more refined than the caliber 98 of old, which had been better suited for a pocket watch than a wrist watch. After the success of this run, IWC ran a series of production runs for different European markets, including in 1979 for Germany and a 1993 limited edition in honor of the 125th anniversary of IWC. The 325 captures an essential portion of watchmaking history— the transition from pocket watches to wrist watches. Pieces like the 325 demonstrated the overall movement of the industry away from large pocket watches and towards wrist watches that provided the same chronometric precision and complication. 

Since the Portugieser’s rebirth, the model line has exploded into arguably the brand’s most recognizable design (up there alongside the Pilot models). In 2020, IWC launched the model we are covering today, the Yacht Club Moon and Tide reference IW344001 in 5n red gold. 

Design Details

The IWC Portugieser Yacht Club Moon and Tide, reference IW344001, is an interesting amalgamation of elements. Carrying the history of the Portugieser model line, with the sporty sizing of 44mm, strong lug presentation, and crown guards, the piece is simultaneously quite refined in some of its finishing details. Fashioned from solid gold with gold hands and applied indices, the piece is reminiscent of say the Rolex Submariner in yellow gold — it’s a robust design and history, but a luxury set of appointments and finishes. This versatility is both an attribute and a detractor depending on your preferences. 

Most interesting with this model is the unique combination of complications present on the piece. Displaying the moonphase in both the northern and southern hemispheres, and a low/ high tide indicator, the piece is the perfect companion for a mariner who enjoys mechanical complications. The strap is incredibly solid, made to resemble a rope texture (yet another nod to sailing), and is seamlessly custom integrated to the case. The strap is outfitted with a deployant clasp, an attribute that is particularly helpful on heavier watches like the Yacht Club. The case flanks are brushed and contrast with a polished bezel. The brushed finish continues to the sides of the lugs, with the dial side of the lugs also receiving high polish. IWC’s dial is a rich blue sunburst that adds to the warmth of the red gold case and further accentuates the nautical theme of the piece. 

Beyond the complications and adaptations made to accommodate them, the piece maintains the identity of earlier Portugieser models, with classic leaf-style hands (lumed in this case), arabic numerals, and large dial alongside a minimalist bezel. This design formula helped make the Portugieser a success in the past, and continues to attract a diverse collector pool in the modern era. 

Join 75,000+ Other Watch Enthusiasts

Get our new arrivals first.

Inner Workings

IWC’s Moon and Tide reference IW344001 is powered by the automatic winding caliber 82835. The 82835 is well spec’d, with 60 hours of power reserve, but brings a considerable feature that many remain wholly unaware of: the Pellaton winding system. Developed by Albert Pellaton, the technical director of IWC until 1966, the unique mechanism uses a series of pawls to transmit the energy from the rotor to the mainspring. The most immediate benefit of the system is significantly greater resilience against shocks and vibrations, interference that can hurt the delicate gear train. It is always exciting to own a piece that incorporates a key development of that brand’s history. Owning an IWC with the Pellaton is analogous to a Breguet watch with a tourbillon— it’s special. 

IWC chose to skeletonize the bridge structure on the movement side in order to provide greater visibility into the componentry of the movement. This is certainly a more obscure method of skeletonization than say a skeleton dial, but it is quite an interesting approach that yields practically the same results without interfering with the dial side of the piece. Skeleton watches are polarizing — some love them, some hate them — but a skeleton movement doesn’t drastically impact the overall presentation of the watch when the dial is unaffected. 

The automatic winding rotor is inlaid with a rose gold medallion bearing the IWC branding. In equally sophisticated fashion, the base of the caliber is made from brass, consistent with tradition. The piece includes hacking seconds and IWC’s proprietary shock absorption system.

Versus the Competition

The most natural alternatives to the Yacht Club Moon and Tide reference IW344001 would be both of Rolex’s Yacht Master model lines. Fashioned from Rose Gold (options are available in white gold as well), the Yacht Master reference 126655 confers the same mix of precious metal and sports spec mentioned earlier. The Yacht Master is likely the archetypical representation of a luxury yachting watch.

Alongside the Yacht Master, the Yacht Master II is an equally common option. Also made from solid gold, the Yacht Master II provides a regatta timer chronograph with countdown mechanism. If you plan on timing races, this watch is the one for you. Of course, the IWC Yacht Club affords an entirely different set of complications, but if you are seeking out a recognizable regatta timer, this is the model to go for. 

For an entirely different take on the regatta timer, consider Richard Mille’s 50 piece limited edition RM 60-01 “St. Barth” . It’s a flyback chronograph with UTC function and 50 hours of power reserve. Made from titanium, this watch is nothing like the others, but is equally interesting, as one of RM’s only watches not to use the typical tonneau case shape. 

Personality

The collector that appreciates this type of watch likely enjoys sailing and/ or yachting. Some will actually use the complications present, exploiting the high and low tide indications as well as the moon phase in different hemispheres to help in navigational decisions. Seeing as most sophisticated modern ships provide this information equally, if not, more accurately, it is more likely that this watch is appreciated more for its ties to the nautical world than for its practical utility as a tool. 

Marine associations aside, the piece is equally wearable and interesting for a complete outsider. If you like larger wrist watches or obscure complications, the rose gold 44mm timepiece is quite charming on its own. 

Final Thoughts

The IWC Portugieser is one of the most successful design languages in the industry. Since its introduction, the Portugieser collection has grown to include a variety of complications, from chronographs, to perpetual calendars, to minute repeaters, to annual calendars. Each watch has its own character, but unique complications such as high and low tide indication and dual moon phases are the types of elements that watch collectors obsess over. Even if the complication is never used, the knowledge that a mechanical solution has been created to address the need for such information is the underlying philosophy that keeps collectors engaged and enthusiastic about watchmaking in the first place. 

See More of the IWC Portugieser Yacht Club Moon and Tide Reference IW344001

Visit europeanwatch.com.

aBlogtoWatch Monthly Giveaway

Win: Bausele Royal Australian Air Force Centenary 2021

Hands-On Debut: IWC Portugieser Yacht Club With New Moon & Tide Complication

In this, the year of our Portugieser 2020, IWC also just released some new Portugieser Yacht Club watches as part of Watches & Wonders 2020 . The Yacht Club has always been an interesting sub-category of the Portugieser, intended to be a sportier breed with features like rubber strap and lume. So far, IWC has only produced the Yacht Club in a flyback chronograph, but this year they’ve added a new model that boasts a new complication for the brand, as well, in the form of a Portugieser Yacht Club Moon & Tide model that has a moon phase and a new tide-tracking complication, which I believe is technically a Mareoscope.

The Portugieser Yacht Club Moon & Tide is debuting in just one variant, but it’s close to universally attractive, coming in a red gold case with brilliant blue dial with matching gold-plated hands and indices. At 12 o’clock, you can see the double moon phase display that shows Spring tides (which happen during full and new moons) and neap tides. At 6 o’clock is the subdial showing the anticipated times for high or low tide. IWC paid attention to the details here, with guilloché work, gold accents, and an applied gold plate around the circumference of the 6 o’clock subdial. As far as legibility goes, there is double-sided AR coating on the convex sapphire crystal, something I always appreciate.

It takes 24 hours and 48 minutes for the earth and moon to be in the same position, meaning that the time between two high tides is always 12 hours and 24 minutes. To measure the tides, IWC added a 49-part module to its 82835 calibre movement. Installing a three-cogged reducing gear to the hour pinion slows down the rotation of the tidal discs, allowing the disc to rotate around its axis every 14.76 days. Note that the time of the next tide is always approximate due to the fact that the discs are continually moving. So, if you’re checking at 10 o’clock AM and the indicator points to 12 o’clock, the tide will actually be slightly after 12. This discrepancy comes out to 10 minutes over 100 years.

It’s an uncommon complication on a mechanical watch, and I can only think of the Corum Admiral with a tide complication, a vintage Eberhard chronograph, and the Vacheron Constantin Les Cabinotiers Celestia from 2017 that include it. I do know that Sinn, as well as some vintage Heuers, have a less robust version of a tide complication.

Visible through the caseback of the IWC Yacht Club Moon & Tide, the 82835 calibre operates at 28,800 vph and has a 60-hour power reserve.

The red gold case measures 44.6mm-wide and 14.4mm-thick, with a water resistance of 30M, so wear it at the Yacht and/or Club but leave it out of the pool. IWC has added a new filigree bezel matched with a flat casing ring which help make for a pretty attractive-looking case that avoids being generic. And at 14.4mm-thick, the bezel adds a nice framing that ameliorates potential chunkiness.

While IWC introduced a bracelet to the Yacht Club Chronograph, the Moon & Tide comes on a blue rubber and textile strap that the collection has become associated with. Of course, the buckle matches the red gold case here.

The IWC Portugieser Moon & Tide is a cool and idiosyncratic piece that is marketed to a very, very niche type of buyer. The tide indicator is a difficult complication to pull off in a mechanical watch, which is why you rarely see it. For that, you have to give IWC serious credit. A gold watch with excellent finishing and a new intricately elaborate complication, the IWC Portugieser Yacht Club Moon & Tide is priced at $34,000 USD . You can learn more at iwc.com .

To ensure the best possible experience, we encourage you to make an appointment. Contact us now.

Pre-Owned Watches

Our Boutiques

Give our experts a call on 1300 808 135 or enquire below

Watches of Switzerland enquire

• Name * First name Last name
• Email address *
• State * State ACT NSW NT QLD SA TAS VIC WA
• Brand * Brand General Enquiry Watch Service & Repair Rolex A. Lange & Söhne Blancpain Breguet Breitling Cartier Hublot Vacheron Constatin IWC Jaeger-LeCoultre Omega Panerai Roger Dubuis TAG Heuer Tudor FOPE
• Special events and offers
• Perpetual Luxury Watch News
• Comments This field is for validation purposes and should be left unchanged.

Subscribe for stories, alerts and our latest news.

By subscribing you are agreeing to our Privacy Policy

Subscribe to our newsletter

• Name * Name
• Email Address *
• Phone This field is for validation purposes and should be left unchanged.

Create account

Create an account so we can make note of your favourites.

• Password * Enter Password Confirm Password
• Email This field is for validation purposes and should be left unchanged.

IWC Schaffhausen

• Portugieser Collection
• Portugieser Yacht Club Moon & Tide

Portugieser Yacht Club Moon & Tide

18 ct 5N gold case, Automatic, self-winding, Diameter 44.6 mm.

Made in Schaffhausen, Switzerland.

AUD / Including GST

Complimentary shipping

Secure payment

International warranty

Authenticity guaranteed

Detailed features & specifications

A complex interplay of gravitational and centrifugal forces between the earth, the moon and the sun causes the tides. On most of the earth’s coasts, there are two high tides per day, always precisely 12 hours and 24 minutes apart. The Portugieser Yacht Club Moon & Tide indicates the expected times for the next high and low water on a subdial at “6 o’clock”.

This is achieved by a reduction wheel train which translates the regular rhythm of the hours into the constantly shifting time sequence of high and low water. The double moon phase display at “12 o’clock” has been enhanced to show spring and neap tides and therefore also informs about the strength of the current tides. Spring tides, which bring particularly high water, occur at full moon and new moon.

The tides are a timelessly fascinating spectacle: twice a day, the waves retreat from the shore before inexorably rising again. This natural phenomenon is caused by a complex interplay between the gravitational and centrifugal forces of the moon, the earth and the sun. The time between two high tides is precisely 12 hours and 24 minutes. If, for example, it is high tide at midnight, the next high tide will occur at 12.24. The Portugieser Yacht Club Moon & Tide shows the slightly shifting time for the next high tide on the dial. During the 12 hours and 24 minutes between two high tides, the display disc will rotate by around 24 minutes on its 12-hour scale. The energy required is channelled from the base movement’s hour pinion. A precisely calculated reducing gear comprising three cogs slows the rotation to the point where the tidal disc rotates around its axis once in exactly 14.76 days. The tidal display module is integrated into the 82835 calibre movement and contains 49 parts.

The 18-carat 5N gold case, blue dial, gold-plated hands and 18-carat gold appliqués underscore the maritime character of this timepiece. The IWC-manufactured 82835 calibre features a Pellaton winding system. Fitted with ceramic components, it boasts a power reserve of 60 hours.

• Movement : IWC-manufactured movement, Automatic, self-winding
• Calibre : 82835
• Crystal : Sapphire glass, convex, antireflective coating on both sides
• Functions : Tide indication, double moon phase for the northern and southern hemisphere with integrated display of neap and spring tide, Date display, Sapphire glass, convex, antireflective coating on both sides, Pellaton automatic winding, Central hacking seconds
• Water Resistance : 6 bar
• Bracelet Strap : Blue rubber strap with textile inlay
• Power Reserve : 60 hours

See the full collection

Visit us in-store, you might also like.

Pilot’s Watch Automatic Top Gun

Big Pilot’s Watch Heritage

Portofino Hand Wound 8 Days

Portofino Chronograph

Sign up to receive the latest news on watch releases, brand showcases, special events and offers subscribe to the Watches of Switzerland email newsletter.

• Name * First Name Last Name

Thank you for subscribing. Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore etdol ore magna aliqua.

You are using an outdated browser. Please upgrade your browser to improve your experience.

Up Close: IWC Portugieser Yacht Club Moon & Tide

The flagship of IWC’s new Portugieser watches unveiled at Watches & Wonders 2020 is not the most complicated, but it is certainly the most unusual. The Portugieser Yacht Club Moon & Tide is a first for IWC, introducing a brand-new complication to its line-up – a tide indication that tracks the ocean’s ebbs and flows.

Initial thoughts

The Yacht Club Moon & Tide is a big, heavy and shiny sports watch with twin sub-dials, but it is far more interesting than the typical watch in this category (which is almost always a chronograph).

One of the very rare, comprehensive tide-display watches on the market, the Yacht Club Moon & Tide incorporates twin tidal displays, which are useless for most but fascinating, not just because they are rare but also because they are, in essence, an astronomical complication. And the tidal displays are combined with IWC’s trademark double moon phase, making it a bit more compelling.

(But like all tide-indicator watches, the new Yacht Club has a caveat: IWC points out it “works reliably on all coasts with two equally strong high and low tides per day”. It is not a flaw, but just a nature of the complication. More that below.)

At the same time, the watch overall is constructed to IWC’s usual levels of quality, which is to say excellent. The only downside is the rose-gold case, resulting in a steep price tag; hopefully a steel or titanium version comes along (and it probably will).

The tidal watch, until now

The tide-indicator complication first appeared in a wristwatch in 1949 when Heuer unveiled the Solunar , which was followed by the Seafarer that combined a tidal display with a chronograph. L ike regatta timers for boating, tide-indicator watches were specialised timers created to cater to the growing popularity of recreational and competitive sailing in the 1950s. However, the tidal complication  remained relatively rare compared to the regatta timers that had a straightforward application in sailing, making it more commercially successful.

But while regatta timers were designed to countdown to the start of a sailing race, tide indications are astronomical in nature. In fact, they can be seen as an elaboration on the moon phase, because tides are the terrestrial result of the fluctuating gravitational forces exerted by the Moon and Sun on the Earth.

The Corum Admiral’s Cup Tides of 1992. Photo – Sotheby’s

Tide indications should be of broader interest, being useful to fishermen, surfers, sailors, at least in theory. In reality, mechanical tide indications occupy an esoteric area of watchmaking. The complication exists in but a handful of watches spread across a diversity of price points, depending on the complexity of the tide indication.

At the entry level is the affordable Sinn 240 St GZ with a no-frills tide-calculator bezel and a price tag of under US$2,000. At the other end of the spectrum is the artistic Real Moon Tides from independent watchmaker Christiaan van der Klaauw.

But worthy of special mention is the pioneer of the high-end tide indication in modern watchmaking. In 1992, Corum debuted the Admiral’s Cup Tides, which included three tide-related displays and is still in production today as the Admiral AC-One Tides.

That makes the Portugieser Yacht Club Moon & Tide fairly special, being the only tide-indicator watch offered by a major brand today. Additionally, it stands out for being a comprehensive tide indicator, while still maintaining a clean, two-register dial that is reminiscent of the Yacht Club chronograph. But before delving into the new Yacht Club, let’s take a short dip into the world of tides.

Tide formation

A tide indication is usually accompanied by the moon phase display because the Moon is a major influence on the level of the oceans, more so than the Sun. The gravitational pull of the Moon generates a tidal force that is constant no matter the phase of the Moon. And that tidal force causes the oceans to bulge, on the side of the Earth that is facing the Moon.

But at the same time, the side of the Earth furthest from the Moon bulges because the gravity of the moon is also acting on it, resulting in the water on Earth being stretched into something resembling a rugby ball.

The bulges in the oceans results in high tides around the continents, but not all high tides are created equal. For simplicity, a high tide is often portrayed as being the same everywhere but that’s actually not the case in reality. The bulge in the oceans furthest from the Moon is smaller than the one facing the Moon as the gravitational pull exerted the far side of the Earth is weaker.

The rugby-ball shape that results from the Moon’s gravitational pull

Because the Earth rotates on its own axis anticlockwise in about 24 hours, it undergoes the cycle of high and low tides twice each day. However, the Moon also orbits the Earth approximately every 29.5 days, roughly equivalent to a calendar month. Thus, during the time it takes the Earth to complete one rotation on its own axis, the Moon progresses a little further on its monthly orbit of the Earth.

As a result, for a fixed spot on Earth to return to face the a fixed spot on the Moon requires 24 hours and 48 minutes, otherwise known as a Tidal Day. And because the tidal cycle happens twice a day, a high tide occurs every half-Tidal Day, or 12 hours and 24 minutes.

Ordinary high and low tides, however, are less extreme than Spring tides that happen when the Sun, Moon and Earth are in syzygy, or linear alignment. Occurring once every full and new moon, syzygy amplifies the gravitational effects on the Earth’s tides, resulting in more extreme tide levels that rises higher as well as fall lower than average.

Conversely, when the Sun and Moon are acting on the Earth at a right angle to each other, a Neap tide occurs. The tidal forces counteract each other, reducing the strength of the average tide due to the opposing gravitational pull. Consequently, high tides are lower, while low tides are higher, compared to the average. While high and low tides are a daily occurrence, Spring and Neap tides occur twice each lunar month, or every 14.76 days.

Spring tides occur when the Earth, Sun, and Moon are in linear alignment; when the Sun and Moon are perpendicular to each other and the Earth, the result is neap tides

Just as the oceans bulge on different sides of the Earth due to the influence of the Moon, tides also vary on a smaller scale from place to place, due to not just to the position of the Moon and tilt of the Earth, but also local factors like the shape of the continents, depth of the oceans and so on.

Consequently, tidal patterns can be classified into three categories. Because it is built to cater to the twice-daily tidal patterns found in most of the world, the Yacht Club Moon & Tide is functional for only one category, semidiurnal, where the two high tides each day are generally equal, and ditto for two low tides. Semidiurnal tides occur on most of the world’s coastlines, but not all.

The tidal indicators on the watch do not function if the high and low tides are respectively unequal, a pattern known as mixed tide. Neither do they apply to the third category of tidal patterns, diurnal, which has only a single high and low tide each day.

As a result, the Yacht Club Moon & Tide will be useful in Europe and the east coast of the United States, but not in the American west coast or Indonesia, for instance.

The tidal function of the Yacht Club Moon & Tide only applies to coastlines in green. Diagram – Michael Pidwirny, University of British Columbia, via Wikipedia

Yachting style

The Portugieser Yacht Club Moon & Tide is unique amongst tide-indicator watches as it combines IWC’s signature double moon phase along with a comprehensive tidal display that shows high and low tides, as well as spring and neap tides.

But style-wise it’s conventional and presented in standard Yacht Club format, which was conceived to be a sportier version of the Portugieser. For that reason, the Yacht Club has a greater wrist presence, not just because of its dimensions but also its muscular design with wide lugs, prominent crown guards, and a pronounced rim on the bezel.

Rendered in pink gold, the watch measures 44.6 mm wide and 14.4 mm high, which is a tad bigger than the already-large Yacht Club Chronograph . Because of it size and weight, the ergonomics are average. It would be far more practical and wearable in titanium or steel instead of pink gold.

The case quality is excellent, as IWC cases almost always are. Though the lines of the case are simple, it is finely finished. And the case is not just heavy, but also extremely solid in construction, as evidenced by the massive case back and the protruding crown guards. That said, the tolerances of crown guards are the one bit of the case that can be improved, as there’s a visible gap between the guards and the case.

The tidal complication

Symmetrically and logically arranged, dial takes its cues from the Yacht Club Chronograph (which in turn was inspired by the  Portugieser Chronograph ). Despite being superficially similar to the its chronograph cousin, the Yacht Club Moon & Tide is distinguished by the combination of a pink gold case with the blue dial, a first for the Yacht Club line.

Though the dial is relatively simple in style and detail, it is executed well, up to typical IWC standards. All of the elements look good even up close, ranging from the applied hour numerals to the printed markings. Even the tiny screw that screws the scale for the tide indicator is cleanly finished, revealing only barely-there machining marks.

The fairly complex tidal displays have been cleverly streamlined, leaving the dial is clean and easy to read. And the orderly appearance of the dial is helped by its size, which means that the date window doesn’t cut into the three o’clock numeral, though the date does crowd up that side of the dial.

The top sub-dial features a rotating blue disc with two apertures to show the phases of the moon as seen from both the Northern and Southern hemisphere. As with all IWC double moon-phase modules, it has an accuracy of a day in 577.5 years.

And because tides are dependent on the Moon, also integrated into the moon phase is the spring and neap tide indicator. The rim of the blue disc is marked with the periods of spring and neap tides, with a small, red arrow to indicate if the current period is a spring, neap, or ordinary tide.

The tide indicator within the moon phase

The sub-dial at six o’clock has a 12-hour scale with a slowly-rotating disc that indicates the times for high and low tides at the current time. Featuring a red arrow for high tide and a red ring for low tide, the indicator travels at the leisurely pace of one rotation every 14.76 days, or half a lunar month.

The slow rotation of the tidal disc is driven by reduction gears in the tide-display mechanism that convert the motion of the hour pinion, which carries the hour hand makes logically makes two rotations a day. The reduction ratio of the mechanism is substantial, after 12 hours and 24 minutes, which is half a tidal day, the tide disc would have rotated just 24 minutes on the 12-hour scale. But though it moves slowly, the tide indicator is exceptionally precise. According to IWC, it will deviate by 10 minutes after one century.

Conveniently, the tide indicator is independent of the time display so the it can be set via the crown. But setting the tide display also reveals a minor drawback in its 12-hour, rather than a 24-hour, scale. When setting the watch, the only way to tell if it is day or night is the date change at midnight. But aesthetics no doubt justify this, as the tidal sub-dial indicator has larger markings and better legibility than if it were on a 24-hour scale.

The tide indicator on a rotating disc, against a 12-hour scale, which shows high tide at about 3:30 and low tide at around 9:30.

The movement

The Yacht Club Moon & Tide is powered by the cal. 82835, made up of the cal. 82110 with the moon and tide module on top. Impressively, even with the added moon and tide displays, the movement has the same 60-hour power reserve as the unencumbered base movement.

Relatively compact but solidly-constructed and robust, the base movement is from IWC’s cal. 82000 family, which is related to the seven-day cal. 52000 and chronograph cal. 89000. The cal. 82000 is smaller than the cal. 52000, but the two share several features, most notably the Pellaton winding mechanism.

Invented by famed IWC watchmaker Albert Pellaton in 1946, the eponymous winding system centres on a heart-shaped cam driven by the winding rotor.

As the rotor turns, the cam oscillates the between two jewelled rollers mounted on a Y-shaped bridge. That causes the bridge to swing back and forth, transferring energy to a pair of attached pawls that push and pull against the teeth of the barrel ratchet wheel, winding the mainspring.

This iteration of the Pellaton system is the very latest, so the automatic wheel, pawls and cam are made of wear-resistant ceramic that needs no lubrication. In contrast, the simpler IWC movements, like the cal. 32000, utilise the “Magic Lever” type of mechanism with push-pull pawls.

The Pellaton winding system (top left) with its ceramic wheel and pawls visible

In addition to the Pellaton winding mechanism, the movement also boasts a free-sprung, adjustable-mass balance, generally considered to be the most sophisticated type of balance wheel. And as with a majority of IWC movements, the balance is attached to an ordinary flat hairspring (only a handful of much-larger movements, such as the 8-day cal. 59000 and the four-day cal. 94000, feature an overcoil hairspring).

The free-sprung balance

Because the movement is relatively fancy for a moderately-sized, simple automatic, it was designed with aesthetics in mind, with the rotor and bridges partially skeletonised to reveal the mechanics. The barrel bridge for instance has two large apertures revealing the barrel, gear train, and of course the Pellaton mechanism.

The finishing of the movement is typical of IWC. Mechanically applied, but sharp and clean, likely sharper and cleaner than peers in the same price bracket. It also incorporates aesthetic details like the “Probus Scafusia” seal on the rotor and again the base plate, along with gold-plated engraving, which give it more colour. As a result, the movement is visually attractive.

The skeletonised rotor with prominent bevelled edges

Concluding thoughts

Tide watches are truly off the beaten path of complications, making them unique in themselves. But the sophistication in design and execution of the Yacht Club Moon & Tide takes it a step further than its peers. The watch only has one real competitor, which is the Corum Admiral AC-One Tides. While the competition is sparse, the Yacht Club Moon & Tide edges ahead as it neatly combines the brand’s trademark moon phase with an all-inclusive tidal display.

The functionality of the Yacht Club Moon & Tide is essentially identical to the Corum Admiral AC-One Tides, but Yacht Club simplifies the tidal displays, making them more digestible for the layman user.

On the other hand, the Corum Tides displays the same information with more granularity, indicating tide levels on a 24-hour scale, and also tide strength on a numeral scale. That is doubtlessly more appealing to the specialist, but is probably too much for a watch enthusiast.

In terms of design, the Yacht Club trumps the Corum Tides, which is a chunky, brightly coloured watch that lacks the refined details of IWC’s wristwatch. And the Corum Tides also falls short in terms of mechanics, since it is powered an ordinary ETA 2892 base movement.

But, and this is important, the Corum Tides is available only in titanium, and is correspondingly affordable, with a price tag of under US$10,000, which is less than a third of the Yacht Club.

Consequently, the IWC is the top choice, but in the extremely rarefied realm of ultra high-end tide watches in precious metal cases. Being an interesting and unusual watch that is executed well, it really should be available in a steel or titanium. Fortunately, it probably will, going by IWC’s past practice.

Key facts and price

IWC Portugieser Yacht Club Moon & Tide Ref. IW344001

Diameter:  44.6 mm Height:  14.4 mm Material:  Pink gold Water resistance:  60 m

Movement:  Cal. 82835 Functions: Time; date; double-hemisphere moon phase; spring and neap tide indicator; and high and low tide display Frequency:  28,800 beats per hour (4 Hz) Power reserve:  60 hours

Strap:  Blue rubber strap with textile inlay

Limited edition:  No Availability: At boutiques and retailers from November 2020 Price:  35,000 Swiss francs

For more, visit  Iwc.com .

Correction April 29, 2020: The cal. 82000 family of movements is in-house, and related to the cal. 52000 and cal. 89000. It is not based on the architecture of the ETA 2892 as stated in an earlier version of the article. Additionally, the water-resistance of the watch is 60 m, and not 30 m.

Addition May 4, 2021: Heuer introduced the Seafarer in 1950.

You may also enjoy these.

Welcome to the new Watches By SJX.

Subscribe to get the latest articles and reviews delivered to your inbox.

Time and Watches | The watch blog

• NEW WATCHES
• INDUSTRY NEWS
• ICONIC WATCHES
• DRESS WATCHES
• SPORT WATCHES
• DIVING WATCHES
• LADIES WATCHES
• CHRONOGRAPH
• ANNUAL CALENDAR
• MOON PHASES

Header$type=social_icons

$type=slider$au=0$cm=0$snip=0$rm=0$c=5$l=0$sp=6000, iwc - portugieser yacht club moon & tide.

ARCHIVE$show=home$hide=mobile

• ►  September (17)
• ►  August (37)
• ►  July (34)
• ►  June (31)
• ►  May (39)
• ►  April (49)
• ►  March (35)
• ►  February (32)
• ►  January (34)
• ►  December (31)
• ►  November (37)
• ►  October (36)
• ►  September (35)
• ►  August (36)
• ►  July (32)
• ►  June (34)
• ►  May (33)
• ►  April (37)
• ►  March (41)
• ►  February (31)
• ►  January (37)
• ►  December (26)
• ►  November (32)
• ►  October (34)
• ►  June (33)
• ►  April (42)
• ►  March (47)
• ►  December (32)
• ►  November (34)
• ►  October (32)
• ►  September (32)
• ►  August (32)
• ►  June (38)
• ►  May (32)
• ►  April (40)
• ►  March (34)
• ►  January (35)
• ►  December (27)
• ►  November (31)
• ►  September (33)
• ►  August (30)
• ►  July (38)
• ►  June (42)
• Gerald Charles - Maestro Anniversary
• Jaquet Droz - Grande Seconde Paillonnée and Petite...
• Glashütte Original launches new high-end customiza...
• Longines - 1832 Collection, black dials
• Czapek - Antarctique
• Krayon - Anywhere
• Hands-on Review: MeisterSinger Astroscope
• Jaeger-LeCoultre - Master Control Geographic
• Certina - DS PH200M Blue
• IWC - Portugieser Yacht Club Moon & Tide
• Interview: Jean-Francois Mojon, Technical Director...
• Hamilton - Khaki Field Titanium
• Zenith - Chronomaster Revival Manufacture Edition
• Omega - Seamaster Planet Ocean 36th America’s Cup ...
• Chopard - L.U.C Perpetual Twin, 2020 new models
• Zenith - Chronomaster Revival “Shadow”
• Kari Voutilainen - 28Sport
• From our Archives: "The history of Eterna"
• Baume et Mercier - Clifton Baumatic 10548
• Union Glashütte - Noramis Date
• 2020 novelties from Arnold & Son and Parmigiani Fl...
• Video: Armin Strom, let's talk about resonance in ...
• Omega - Speedmaster 38, new full gold models
• Hands-on Review: DOXA SUB 300 Carbon
• Bell & Ross - BR 03-92 HUD
• Vacheron Constantin - Overseas Perpetual Calendar ...
• Breguet - Reine De Naples Grand Feu Enamel 8918
• TAG Heuer - Monaco Grand Prix de Monaco Historique...
• Corum - Admiral 42 Automatic Bronze
• Baselworld cancels January 2021 Show
• Omega - Trésor collection, new 2020 models
• A. Lange & Söhne - Little Lange 1 Moon Phase
• Glashütte Original - PanoMaticLunar in forest green
• Jaquet Droz - Grande Seconde Quantieme 41 mm
• Nomos Glashütte - Ahoi neomatik and Ahoi Datum for...
• Panerai - Submersible EcoPangaea Tourbillon GMT 50...
• From our Archives: "The history of the Richard Mil...
• Jaeger-LeCoultre - Master Control Calendar Q4018420
• ►  April (36)
• ►  March (31)
• ►  February (29)
• ►  December (28)
• ►  November (30)
• ►  October (31)
• ►  June (28)
• ►  May (35)
• ►  April (31)
• ►  March (40)
• ►  January (40)
• ►  August (31)
• ►  June (36)
• ►  May (37)
• ►  February (28)
• ►  November (25)
• ►  October (26)
• ►  September (29)
• ►  August (24)
• ►  July (27)
• ►  June (27)
• ►  May (26)
• ►  April (28)
• ►  March (38)
• ►  January (31)
• ►  December (24)
• ►  October (29)
• ►  September (27)
• ►  August (23)
• ►  July (29)
• ►  June (22)
• ►  May (28)
• ►  April (30)
• ►  January (29)
• ►  December (23)
• ►  October (28)
• ►  September (30)
• ►  June (23)
• ►  May (24)
• ►  April (27)
• ►  January (28)
• ►  December (21)
• ►  November (21)
• ►  September (26)
• ►  August (20)
• ►  July (23)
• ►  June (17)
• ►  May (20)
• ►  April (22)
• ►  March (32)
• ►  February (22)
• ►  January (36)
• ►  December (22)
• ►  November (19)
• ►  October (15)
• ►  September (10)
• ►  August (14)
• ►  July (17)
• ►  June (21)
• ►  April (25)
• ►  March (19)
• ►  February (16)
• ►  January (14)
• ►  December (8)
• ►  November (10)
• ►  October (7)
• ►  September (5)
• ►  August (3)
• ►  July (2)
• ►  June (3)
• ►  May (3)
• ►  April (4)
• ►  March (7)
• ►  February (4)
• ►  January (13)

• A. Lange & Söhne Lange 1
• Audemars Piguet Royal Oak
• Blancpain Fifty Fathoms
• IWC Portuguese
• Jaeger-LeCoultre Reverso
• Omega Speedmaster
• Panerai Luminor
• Patek Philippe Nautilus
• Rolex Daytona
• TAG Heuer Monaco
• Zenith El Primero

Footer Social$type=social_icons

advanced search

• Watches by brand
• Calibers by brand
• Portugieser
• IW3440002 : Portugieser Yacht Club Moon & Tide Stainless Steel / Black / Bracelet

IWC - IW3440002 Portugieser Yacht Club Moon & Tide Stainless Steel / Black / Bracelet

Price in euro

Iwc iw3440002 description.

The Portugiser Yacht Club Moon & Tide IW3440002 debuted in 2024. This Portugieser has a Stainless Steel case and matching bracelet, paired with a Black dial. It is powered by caliber 82835, a self-winding movement with tide and moonphase indication, and -a first for the brand- a silicon balance spring.

© Copyright 2014-2024 - WatchBase.com - Terms of Use - Privacy Policy - About - Contact

IWC Portugieser Yacht Club Moon & Tide (Live Pics & Pricing)

A complication perfectly suited for the portugieser collection....

The IWC Portugieser was born in 1939 following a request from two Portuguese navigators and businessmen – Rodrigues and Teixeira – who wanted the precision of a marine chronometer in a wristwatch format. No need to say that this iconic IWC collection has strong ties to the nautical world. And to celebrate these roots, IWC is unveiling a new model today with an unprecedented complication that couldn’t be more appropriate: a tide indication. Encased in a sporty and large case, meet the new IWC Portugieser Yacht Club Moon & Tide. 

Introduced in 2010, the IWC Portugieser Yacht Club is a sports model in this rather elegant collection, with its nautical, yachting, regatta-ready note. More robust, larger, a bit more rugged and bulky, it has mostly favoured one complication until now, the chronograph – a world timer has also been available in the past. A versatile watch, capable of timing a sailing race but also at ease with a drink at the marina. In addition to the revamped chronograph collection, also introduced as part of the 2020 line-up, the Schaffhausen-based brand is also unveiling a brand new complication, with deep nautical roots: the new Portugieser Yacht Club Moon & Tide.

Visually, there’s not much that changes compared to the rest of the Yacht Club collection. We find the same 44.6mm case, here crafted in 18k rose gold (the only version available for the moment), with crown guards, robust lugs and a thin polished bezel opening on a large dial. In the same vein, the dial retains the classic leaf-shaped Portugieser hands, yet bolder and with lume, the railroad minute track with applied lume plots and signature Arabic numerals. Complementing the nautical look, this IWC Portugieser Yacht Club Moon & Tide is worn on a water-ready blue rubber strap with a sailcloth-like textile insert ( note: the photographed watch here is a prototype and the strap will be slightly different, with an integrated shape between the lugs ).

What changes, however, is the display.  Instead of the chronograph, there is now a novel indication, based on two sub-counters, linked to moon phases and tide calculations. A sub-dial at 6 o’clock indicates the expected times for the next high and low tide. The double moon phase display at 12 o’clock (with both hemispheres indicated) has been enhanced to show spring and neap tides and thus provides information about the strength of the current tides. Spring tides, which bring particularly high water, occur at full moon and new moon. Considering the vocation of the IWC Portugieser Yacht Club, it feels like a very appropriate complication!

The dial of this new watch has a blue sunray-brushed base with rose gold contrasting elements for the hands, the indexes and the secondary indications – a classic combination for IWC. Not to obscure the lower sub-dial, the date is positioned at 3 o’clock.

To power this new watch, IWC relies on its 82000-series base movement. The tidal display module is integrated into the novel calibre 82835 and contains just 49 individual parts. The base movement is familiar and boasts 60h of power reserve, features the Pellaton winding system and beats at 4Hz. It is visible through a sapphire display caseback and is finished in a pleasant way, with opened bridges that reveal most of the parts – including the ceramic, wear-free wheels.

The IWC Portugieser Yacht Club Moon & Tide (ref. IW344001) will be priced at CHF 35,000 or  EUR 34,900 . More details at iwc.com .

Technical specifications – IWC Portugieser Yacht Club Moon & Tide

Leave a reply cancel reply, top stories.

First Look The Tissot PRX 40 Powermatic 80, now with Gradient Dials or…

First Look The Blancpain Air Command 42mm and 36mm, now available in Green

First Look Grand Seiko Recreates the Hi-Beat 45GS with the new SLGW004 and SLGW005

Subscribe to our newsletter, subscribe to our newsletter.

MasterHorologer

IWC Schaffhausen Portugieser Yacht Club Moon & Tide (Ref. 344001)

Combining timeless elegance with ruggedness and high water-resistance, the IWC Schaffhausen Portugieser Yacht Club collection offers extremely versatile nautical sports watches.

Introduced in 2020, the Portugieser Yacht Club Moon & Tide (Ref. 344001) is the first watch from IWC to sport the newly developed tide indication. A subdial at 6 o’clock indicates the expected times for the next high and low tide.

The double moon phase display at 12 o’clock has been enhanced to show spring and neap tides and thus provides information about the strength of the current tides. Spring tides, which bring particularly high water, occur at full moon and new moon.

The module for the double moon phase display and the tide display is driven by the IWC-manufactured 82835 calibre. This robust automatic movement features a Pellaton winding fitted with ceramic components and offers a power reserve of 60 hours. It can be viewed through the transparent sapphire glass back.

Technical details

Model: iwc portugieser yacht club moon & tide, ref. iw344001.

Functions Perpetual moon phase for the northern and southern hemispheres Display for spring tide or neap tide Tide indicating with the time of the next high or low tide Date display

Movement IWC manufacture calibre 82835 Mechanical movement Frequency: 28,800 vph/4 Hz Jewels: 22 Power reserve: 60 h Winding: Automatic Pellaton automatic winding system

Case, dial and strap 18-carat 5N gold case Glass: Sapphire, convex, antireflective coating on both sides Water-resistant: 3 bar Diameter: 44.6 mm Height: 14.4 mm See-through sapphire glass back Blue dial, gold-plated hands, 18-carat gold appliques Blue rubber strap with textile inlay

About Moon & Tide Function

The Portugieser Yacht Club Moon & Tide features a tide display that keeps you informed about the next high water. It is possible thanks to a special wheel train that translates the rhythm of the hours into the constantly shifting chronological sequence of high and low water.

The rhythm of the tides is as old as the Earth itself. As the tide ebbs, water retreats from the coast until it reaches low tide. At that point, the sea reverts to a flood tide until it reaches high water. In the Wadden Sea, an area of wetlands between Denmark, Germany and the Netherlands, the constant rhythm of the tides has created a level of biological diversity among the highest on Earth. But ebb and flow are also of vital importance for shipping. When sailing close to the coast, a skipper must keep his eye on tide tables to avoid running aground. This is the reason why the study of tides is an integral part of any nautical training.

The Greek mariner Pytheas recognized the link between this natural phenomenon and the moon as early as the fourth century BCE. It is particularly noticeable at the coasts that the moon visible at high tide is almost at the same place in the sky again at the next but one high tide. In 1609, the German astronomer Johannes Keppler first outlined a theory according to which the moon attracts the water in the oceans and thus causes the tides.

Indeed, the tides are caused by a complex interplay of gravitational and centrifugal forces between the Earth, the moon and the sun. On the side of the Earth facing the moon, the moon’s gravitational pull attracts the water, creating a bulge that causes the tides. But a similar bulge of water also forms on the side of the Earth facing away from the moon. This is caused by the centrifugal forces that arise due to the rotation of the Earth: Rather like the clothes in a spin dryer, the masses of water are pushed outwards by these centrifugal forces.

The Earth rotates on its own axis once every 24 hours and, within that period, moves under the two bulges of high tide and two areas of ebb tide. For human beings, who do not notice the rotation of the Earth, this gives the impression that the water is receding from the coasts and then rising again. But why does high tide occur at a different time each day? During the time it takes the Earth to complete a rotation, the moon progresses a little bit further. So, on Earth it takes 24 hours and 48 minutes for the moon to be in the same position. The time between two high tides, then, is always exactly 12 hours and 24 minutes. If, for example, it is high tide at midnight, the next ones will occur at 12.24 and 0.48, respectively.

The tide display on the Portugieser Yacht Club Moon & Tide now shows the slightly shifting times for high tide on the dial. During the 12 hours and 24 minutes between two high tides, the display rotates by around 24 minutes on the 12-hour scale. The energy required to turn it is channeled by the basic movement’s hour pinion. The challenge facing the designers was to convert the rapid hourly rhythm into the much more leisurely rotation of the tidal disc. A reducing gear comprising three precisely calculated cogs slows the rotation to the point where the tidal disc rotates around its axis once in exactly 14.76 days. The tidal display module is integrated into the 82835 calibre and contains just 49 individual parts.

Because the display rotates continuously, it always shows the approximate time of the next high tide. If the arrow points to 12 o’clock at 10 o’clock in the morning, the next high tide will be a little later than 12 o’clock because, in the next two hours, the tidal disc will also move a little further. On the opposite side you can also read the approximate time for the next low tide.

The exact times for high and low tide depend on the longitude. As a result, the display needs to be calibrated once using the tide tables for a specific location, such as New York, Lisbon or Sydney. According to this, the deviation is theoretically only 10 minutes in 100 years. The display works reliably on all coasts with two equally strong high and low tides per day.

Another special feature of the Portugieser Yacht Club Moon & Tide is the double moon phase display. It has been extended to include a special inscription and also provides information about the strength of the current tides. At full and new moon, the Earth, moon and sun are in a direct line. In this constellation, the tidal forces are cumulative and generate a spring tide – a particularly strong high tide. At half-moon, however, the sun and moon are at right angles to each other. The result of this is a weaker high tide, or “neap tide”. Exactly how high the water rises depends on the geographical location and the exact physical nature of the coast.

While the tidal swell on the open sea is only about 30 centimetres, the sea level during high tide rises by up to 20 metres in the Canadian Bay of Fundy. So, anyone in charge of a boat would be well advised to take a look at the dial of their Portugieser Yacht Club Moon & Tide.

Know more about IWC Schaffhausen watch brand and its history.

Discover more iwc schaffhausen watches (from 2011 to 2022)., discover iwc schaffhausen watches archives from 1990 to 2010., share this:.

• FEATURED POSTS
• Vero Watch Company Smokey Bear 80th Anniversary
• Wancher Dream Dragon Automatic Watch
• AVI-8 Hawker Harrier HUD Automatic
• OLTO-8 Coral Steward Automatic Diving Watch
• AISION HANG Series Watch
• Wancher Dream Watch Kuro Muji
• Wancher Dream Watch 18K Kinpaku Nuri
• Jowissa Virtuo Automatic
• NOVE Atlantean II Automatic Diving Watch
• Spinnaker Tesei Bronze Automatic New Models
• Weiss Standard Issue Dive Watch with Ocean Blue Dial
• Weiss Standard Issue Field Titanium Black DLC 42mm Ceramic Green
• Weiss 38mm Automatic Standard Issue Field Watch with Date Set
• Spinnaker Croft Pioneer Automatic
• AQUATRIDENT Ichthyosaur 500M Diver
• Spinnaker Fleuss GMT Automatic
• AVI-8 Flyboy Airmaster Sector Meca-Quartz Watch
• Weiss Standard Issue Field Watch Titanium Black DLC
• Weiss 42mm Standard Issue Dive Watch with Agave Dial
• DUFRANE Bergstrom MkIV
• Spinnaker Bradner GMT Automatic
• Weiss Gauge Series 42mm with Cardinal Dial
• The Dirty Dozen 1945 (DD-45) by Praesidus Watch Company
• AVI-8 P-51 Mustang Twilight Tear Automatic Limited Edition
• Wancher Ranger IV AKA FUJI Automatic GMT Watch
• Spinnaker Hull Chronograph New Models
• OLTO-8 INFINITY I: Automatic Watch Inspired by RPM meters
• NOVE Marine
• Weiss Standard Issue Field Watch with Tennessee Tangerine Dial
• Spinnaker Croft Mid-Size Automatic Dolphin Project Limited Edition

LATEST POSTS

• Weiss Standard Issue Field Watch DLC Titanium 38mm with Carbon Dial
• HYT T1 Series ‘Millésime Edition’
• Hermès ARCEAU Grand Tralala brides et mors
• Perrelet TURBINE Ice Blue
• CITIZEN ATTESA F950 Eco-Drive Satellite Wave GPS
• Jaeger-LeCoultre Reverso Tribute Enamel Tribute to Claude Monet’s Venice
• TAG Heuer Carrera Extreme Sport New Models
• BOVET Récital 12 Titanium
• HUBLOT Spirit of Big Bang Tourbillon White Ceramic Limited Edition
• ZENITH DEFY Skyline Chronograph Boutique Exclusive Edition
• Orient Star Contemporary M34 F7 “the Aurora at Dawn” Limited Editions
• Orient Star Sky Blue Limited Editions
• Orient Star M42 Diver 1964 2nd Edition F6 Date 200m Titanium
• Orient Star M34 F8 Skeleton Hand Winding Reference RE-AZ0104L
• Gerald Charles Maestro 4.0 Ducati 30° Anniversario 916 Limited Edition
• DAVOSA Ternos Professional 68h Carbon Limited Edition
• MeisterSinger Edition Anton Bruckner
• MeisterSinger Vintago Edition RedBar
• MeisterSinger №03 Blue Special Edition
• Franck Muller Cintrée Curvex™ Edelweiss
• Backes & Strauss Mayfair Golden Sands
• MICROMILSPEC MILGRAPH
• Frederique Constant Classics Carrée Small Seconds
• SEVENFRIDAY ME-SERIES
• CORUM Golden Bridge Serpent
• Schaumburg Watch SolSequor Multiversum
• Grand Seiko Re-creation of the 45GS Limited Editions
• NEW WATCHES 2024
• NEW WATCHES 2023
• NEW WATCHES 2022
• HANDS ON REVIEWS
• FEATURED BRANDS
• FEATURED TIMEPIECES
• PRIVACY POLICY
• WEBSITE DISCLAIMER

Watch Families

Pilot’s Watches

Portugieser

All Watches

• Portugieser Eternal Calendar
• The Portugieser Novelties
• Colored Ceramics
• Chronograph Watches

Accessories

Straps & Bracelets

Buckles & Clasps

Watch Boxes

• Strap Materials
• Quick Change System
• Trace Your Strap

Service types

Service Price Calculator

Care Advice

Extend Your Warranty

• Service FAQ
• Trade in Service

Find a Boutique

Book an Appointment

• The Journal
• Partnerships
• Complications
• Our History
• Sustainability
• Collections Archive

IWC Schaffhausen

Reset password

Please provide the email address you've registered with, and we will send you a link to reset your password.

Reset Password

Type in a new password in the fields below to reset your password.

Your password must contain at least 8 characters and it must include at least three of the following categories: lower case letters, upper case letters, numbers and special characters

Please confirm your email address

Thank you for registering.

We’ve sent you an email with a link to confirm your email address, to ensure that no one is using your email address without your permission.

The link in the email is valid for 24 hours.

Mon-Fri: 8:00AM - 8:00PM CST

• Send IWC an E-Mail We will reply within 24 hours Send IWC an E-Mail

Choose the closest IWC boutique and come visit us soon or visit our IWC service centres - we would be delighted to take care of your timepiece.

Schedule a visit at the boutique of your choice.

Your feedback is important to us. Share it with us here.

Unfortunately there is no matching location. Please double check your spelling or visit our international site below

ELEGANCE JOINS FORCES WITH SPORTINESS

Elegantly proportioned cases combined with stainless-steel bracelets and rubber or textile straps make the portugieser yacht club an all-round companion.

Since 2010, the Portugieser Yacht Club, an elegant sports watch designed for sailors, has combined timeless elegance with ruggedness and high-level water-resistance. With their filigree bezels and flat casing rings, the new 44-millimetre models have particularly elegant proportions. Ticking away inside is the IWC-manufactured 89361 calibre with flyback function, which combines stopped hours and minutes in a small totalizer at “12 o’clock”. A choice of straps and bracelets make this elegant sports chronograph the perfect companion for use on board, at the beach and on terra firma. The high-quality stainless-steel bracelet, with its polished and satinfinished surfaces, is pleasant to wear. For the first time ever, the watch is also available with a bicolour bracelet in 18-carat 5N gold and stainless steel. In addition,  there is a choice of hard-wearing rubber and textile straps.

The Portugieser Yacht Club Moon & Tide represents a technical highlight. For the first time, in this model, IWC presents its newly developed tide indicator. A totalizer at “6 o’clock” shows the times of high and low tide. Positioned at “6 o’clock” is an IWC speciality, the double moon phase display. It has been expanded to show the spring and neap tides and thus provides more information about the strength of current tides.

Portugieser Yacht Club

• 125212, Moscow, Leningradskoye Highway, 39 p. 6 Royal Yacht Club
• Miami +1 786 233 7721 London +44 203 807 94 54 Moscow +7 495 215 19 11
• [email protected]