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Telstar 8M is a 26 ′ 2 ″ / 8 m trimaran sailboat designed by Tony Smith and built by Sandwich Yacht (UK) between 1970 and 1981.

Drawing of Telstar 8M

Rig and Sails

Auxilary power, accomodations, calculations.

The theoretical maximum speed that a displacement hull can move efficiently through the water is determined by it's waterline length and displacement. It may be unable to reach this speed if the boat is underpowered or heavily loaded, though it may exceed this speed given enough power. Read more.

Classic hull speed formula:

Hull Speed = 1.34 x √LWL

Max Speed/Length ratio = 8.26 ÷ Displacement/Length ratio .311 Hull Speed = Max Speed/Length ratio x √LWL

Sail Area / Displacement Ratio

A measure of the power of the sails relative to the weight of the boat. The higher the number, the higher the performance, but the harder the boat will be to handle. This ratio is a "non-dimensional" value that facilitates comparisons between boats of different types and sizes. Read more.

SA/D = SA ÷ (D ÷ 64) 2/3

  • SA : Sail area in square feet, derived by adding the mainsail area to 100% of the foretriangle area (the lateral area above the deck between the mast and the forestay).
  • D : Displacement in pounds.

Ballast / Displacement Ratio

A measure of the stability of a boat's hull that suggests how well a monohull will stand up to its sails. The ballast displacement ratio indicates how much of the weight of a boat is placed for maximum stability against capsizing and is an indicator of stiffness and resistance to capsize.

Ballast / Displacement * 100

Displacement / Length Ratio

A measure of the weight of the boat relative to it's length at the waterline. The higher a boat’s D/L ratio, the more easily it will carry a load and the more comfortable its motion will be. The lower a boat's ratio is, the less power it takes to drive the boat to its nominal hull speed or beyond. Read more.

D/L = (D ÷ 2240) ÷ (0.01 x LWL)³

  • D: Displacement of the boat in pounds.
  • LWL: Waterline length in feet

Comfort Ratio

This ratio assess how quickly and abruptly a boat’s hull reacts to waves in a significant seaway, these being the elements of a boat’s motion most likely to cause seasickness. Read more.

Comfort ratio = D ÷ (.65 x (.7 LWL + .3 LOA) x Beam 1.33 )

  • D: Displacement of the boat in pounds
  • LOA: Length overall in feet
  • Beam: Width of boat at the widest point in feet

Capsize Screening Formula

This formula attempts to indicate whether a given boat might be too wide and light to readily right itself after being overturned in extreme conditions. Read more.

CSV = Beam ÷ ³√(D / 64)

The TELSTAR was designed and built by Tony Smith in Britain from the early 70’s through about 1980. The UK TELSTAR production was somewhere around 200 boats - first there was the TELSTAR 26 and around 1977 the TELSTAR 8m, which featured a fatter/roomier main hull. There was also a TELSTAR 35 and a version of the 8m which had outer hulls which pulled in close to the main hull while the boat was in the water, but few were built. Tony emigrated to the US and set up Performance Cruising in Maryland. There may have been 10 TELSTARS built in the US in late 1980 to mid-1981 (serial numbers 250 through 259 or 260). The factory burned down in mid-1981, and all molds were lost (Tony started building the GEMINI catamarans after the fire).

Type Year Hull #s LOA Sail Area Weight Comments

Prototype 1970 001 26’ 298 ? Entered Crystal Trophy

MK 1 1970-1975 002 - 080 26’ 340 3500 Std boat. In production 3 years.

MK 2 1976-1977 083 - 171 26’ 300 2800 Floats lengthened?

Marina Version 1978-1979 009 & 187 ? ? ? Folding amas.

Mk 3 1978-1979 172 - ? 8m ? ? Enclosed c/b trunk. Wider center hull.

8 meter (Std) 1978-1980 172-216 8m ? ? Standard 8meter. Heavier than later versions.

8 meterE 1980 184 + 8m 285/320 ? Economy lightweight. Tall rig (34’)

8 meter/Std 1981 250-260 8m ? ? Standard boat produced in USA.

T 36 1978 T35 (1 - 8) 35’ 470 11000

A new TELSTAR 26 is now available from:

Performance Cruising Inc. 7364 Edgewood Road Annapolis,Maryland 21403 410.626.2720 www.geminicatamarans.com

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Search our catalog, go direct, enter a boat reference, telstar trimaran 8m mk3, £ 0 sold / unavailable.

  • Boat REF#  ·  41775
  • Length  ·  7.92m
  • Year  ·  1979
  • Construction  ·  GRP
  • Underwater profile  ·  Multihull
  • Sleeping berths  ·  5
  • Engine  ·  1 x gasoline 9.9hp, Yamaha ultra long shaft 4 stroke (1988)
  • Lying  ·  PLYMOUTH, UK

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  • Specification
  • Additional Information

Extra Details

Designer Tony Smith
Builder Tony Smith
Lying PLYMOUTH, UK
Fuel capacity 20.0 ltr (4.4 USG) Total - 1 Tanks
Water capacity 80.0 ltr (17.6 USG) Total - 2 Tanks
Holding tank capacity 20.0 ltr (4.4 USG) Total - 1 Tanks
Last survey 00/04/2007
Engine 1 x gasoline 9.9hp
Engine make and model Yamaha ultra long shaft 4 stroke (1988)
Engine Hours Not Recorded
Engine Cooled Direct
Steering tiller
Drive outboard
Prop(s) 3 blade fixed
Fuel consumption (approx) 0.5 ltr (0.1 USG) /hour At Cruising Speed
Cruising speed (approx) 5 knots
Max speed (approx) 6 knots
Length 7.92m
LWL 7.31m
Beam 4.88m
Draft Min 0.46m
Draft Max 1.37m
Displacement 2,000kg (4,410.0lbs)
Headroom 1.73m
Storage On mooring

Sloop rigged Aluminium spars (1979) with Stainless Steel standing rigging (1987)

Reefing mainsail Arun - roller boom (1987)
Headsail - Hank On (1987)

Electrical Systems

12 volt battery, 2 batteries charged by: engine

Construction

Construction GRP
Underwater profile Multihull
Finish Gelcoat finish

Has a lifting keel.

Accommodation

Total # of berths 5
No. of double berths 1
No. of single berths 3
Cabin(s) 2
Heads 1 heads (Sea Toilet)

2 burner propane Stove

Stove
Broiler
Sink
Drapes
Manual water system
Fresh water wash
Sprayhood
Rode
Fenders
Boathook
Beaching legs
Trailer

2 halyard winches 2 sheet winches 1 anchors 15.00m of chain 60.00m of rode

Nav Equipment

Compass
VHF
GPS
Navigation lights

Safety Equipment

Fume detector

2 bilge pumps (1 manual / 1 electric)

Broker's Comments

A well looked after and much loved boat with places for most things all neatly presented.

A noted bonus to this particular Telstar is she comes with a galvanised trailer, not the cheapest thing to purchase, and with such is transportable by road and easily stored with the outer hulls folding in to reduce her beam.

These boat details are subject to contract. Note: Offers on the asking price may be considered.

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  • General Multihulls
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1359 Telstar 8m Trimaran

SOLD

Currently UK flagged.

Construction +

Accommodation +, rig & rigging +, deck gear +, ground tackle +, navigation equipment etc +, electrical system +.

  • Boat details are supplied by the owners & cannot be guaranteed by SBM. You must verify those details personally, or employ a Marine Surveyor before purchase.



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Telstar 8 Meter Trimaran, 1980, Silverdale, Washington at [email protected]

Telstar 8 Meter Trimaran, 1980, Silverdale, Washington sailboat

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telstar 8m trimaran for sale

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05-05-2017, 08:13  
Boat: Summer Twins 25
that i have been working on for the last year.

I have always liked Trimarans and a Telstar 8M has come up i like.
The Telstar has had a extension and heavy duty and stays on it.It needs a bit of mainly cosmetic.

I like the fact that the Telstar has folding Ama's and can be put on a and moved around by road. I am researching driving it through and down through , to the South Sea and sailing down to in it, leaving it there, then spending 6 months in the Uk and 6 months in .

I know that the Heavenly Twins has a good pedigree and is a safe . Many have Circumnavigated and crossed the Atlantic from UK.

Im wondering what your thoughts are to the Telstar 8 Meter? I know some have crossed the Atlantic.
I am interested to what your thoughts would be to having this as my craft in South East , do you think it is capable off shore Journeys in these waters?

I do like the Heavenly Twins but to get it there would mean a lot off sailing and my Red Sea option looks a bit unstable at the moment to say the least. Hence the idea of driving the Telstar there.

Looking forward to thoughts.
05-05-2017, 08:57  
Boat: Beneteau 32.5
bank was nearly impossible. Even though it's heavier than many small tri's, it's still fairly weight sensitive. I had a composting and other weight and space saving ideas, yet I still feel it was overloaded. My 26 foot Westerly Centaur handled seas much, much better. (but was of course much slower in light air)

I know at least one Telstar has crossed the Atlantic, but in my experience, it's not a good ocean cruiser. I wonder if any of those who crossed the Atlantic in one crossed back. I mine after just one year of .

if you get one, be very careful with those Amas when raising them and going under to pin them in place. They could kill you.
06-05-2017, 01:27  
Boat: Fountaine Pajot Athena 11.6m Rapa Nui II
Channel/ La Manche several times, generally fast but stopped dead in some chop particularly motoring. Not a good load carrier. Quite how well she would stand up to such a trail would be problematical, not to mention the cost.
Could be done, but surely locally would be favourite. There are a few listed in the area.
06-05-2017, 18:31  
Boat: Beneteau 32.5
between the amas and other features caused so much under slamming when trying to sail or upwind in even moderate seas to make upwind progress in anything but ideal conditions nearly impossible.

I also had problems taking on through the trunk, but there may have been a fix for that. Obviously space is very limited.

While I found it much easier to than my of the same length, getting it rigged and ready to launch was quite the , nothing like a trailer sailor. It also takes a very wide launch area go launch it off the trailer.

The idea behind the Telstar is great. I give them kudos for giving it a try. The reality, not quite so great in my opinion.
10-05-2017, 05:28  
. I have never sailed a Telstar but think your trip would be safer in the HT. It does bang in a chop and doesn't point to well but if you are in no hurry, it's no problem. It's a sound ocean going .
Make sure you got a good as you will be motoring as much as sailing.
I think you best bet would be to sail there directly.

I think your biggest concern/problem would be pulling it down through China. That might be a nightmare in itself. I'm sure you would have to get some Chinese transport company to do that for you. They are not to keen on letting foreigners drive into and through their country.

Good luck and enjoy.
 
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Telstar Trimaran 8 Meter Mk 3

telstar 8m trimaran for sale

Country/Region of Manufacture: United Kingdom

Engine Make: Mercury

Hull identification number: 175

Brand: Trimaran

telstar 8m trimaran for sale

This boat has been owned by me since 2006 in that time everything on her has been renewed and replaced All the following have been fitted new by me since purchase date New sails from kemp. (Now in need of refurbishment)Mast head aerial Nav lightsWind speed and direction indicatorReplacement boomAll standing and running riggingDeck hatch lidsWindowsWinchesMain sail trackAll blocksAsymmetric spinnaker on retracting bowspritAll headliningAll cabin seats and cushions CurtainsReplacement flushing toilet and all fittingsIcom vhf radio fitted 2009 Stereo radio CD player internal and external waterproof speakers (not connected) New anchor chain and warp New center boardNew rudderNew tillerMercury 9.9 Bigfoot electric start 4 stroke new in 2010All outrigger supports replaced or refurbishedNew stainless steel outboard skid slide and hinge fitted Eberspacher diesel heater (on boat when purchased and has not been used would probably require a service) Rutland Wind generator ( on boat since purchase however I have factory refurbished the regulator) Fiberglass dingy and Inflatable complete with Yamaha Malta 3 HP 2 stroke outboard (available separately if required) There is no road trailer for the boat and she is afloat in Benfleet creek Essex She can be folded for road transport or sailed away

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