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Rare Tramp trimaran in overall good condition. All there and all works. We sail and maintain it regularly, not just let it sit and degrade like a lot of others of this vintage you see for sale that need a lot of work. I am confident in the boat and as such am happy to set the whole thing up in my driveway (extend amas, raise mast, set sails, fire motor) on the trailer for anyone who makes an accepted offer. Sails fast and flat once on the water.
We have used this boat to camp/sail in the San Juan Islands and inland lakes and rivers of the west coast. We sleep on the tramps or in the cockpit. Never really tweaked the sailplan, but have still enjoyed sailing it.
Hulls and all beams/bearings in good condition. No delamination, or signs of previous damage. Hulls are a bit weather worn after so many years but are structurally sound. Main bilge bone dry even after sailing for a week. Tramps in good condition, maybe half way through their life.
I have had a lot of interest in the boat and am willing to sell to someone from out of the area, but not before a signed contract is in place and not before I speak to your shipper directly. I also have it listed locally on Seattle Craigslist so you can see the boat there as well.
I have clear Washington State titles, in my name, with no bank liens, for both the boat and the trailer.
Equipment: 3 sails (full batten main, jib, spinnaker, all in decent condition, no riots or damage), Honda 5hp 4-stroke outboard (runs fine, both oils changed recently), trailer (good condition, good tires and spare, bearings just regreased), 2 cockpit cushions, new 12 volt panel (all lights working), Bimini, full cockpit enclosure, running back stays, fire extinguisher, fuel tank, tiller extension.
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
A more accurate formula devised by Dave Gerr in The Propeller Handbook replaces the Speed/Length ratio constant of 1.34 with a calculation based on the Displacement/Length ratio.
Max Speed/Length ratio = 8.26 ÷ Displacement/Length ratio.311
Hull Speed = Max Speed/Length ratio x √LWL
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
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
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
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 Beam1.33)
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 Tramp was built in Australia in the early 1980’s. It was the first production folding trimaran designed by Ian Farrier. The racing version features a taller mast and is also known as the SUPER TRAMP. A US built version by Pyramid International was marketed as the EAGLE. Ostac later produced a TRAMP variant (re-design by Farrier) that featured a small cuddy cabin.
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