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This sailboat has always been very well maintained by its owner and has the most complete (and very recent) equipment that can be found on an OVNI of this category.
UKULELE is ready to sail: it has just covered 5,000 miles between Grenada and Tahiti in the last few months. It is wintering in Tahiti.
Equipment: Among others: - Bow thruster, electric winches, 145 liters hour desalinator, 3500 watt generator - New staysail on new furler added in 2024. semi-battened mainsail vectran quality it is also new from 2024 and genoa in perfect condition - In 2024, an aluminum roof protecting from the sun and rain was built: it supports the solar panels (new 700 watts) and 2 silent wind turbines 400 watts (independent regulator) - Batteries (750 amps engine battery) are new, victron regulator - Victron centaur and pronautic battery chargers - The 6-person life raft in a bag is new as well as the dinghy hypalon / aluminium 3d tender and the 2-stroke Tohatsu engine - 3 anchors: new lewar 2024, the original one and a new Fortress 2023. - The rudder and drift cylinders have been disassembled, the pistons changed in 2024, the antifouling is also from 2024, - The engine is a yanmar 4 cylinder 4jh4e and has only 1700 hours because this sailboat runs very well under sail even in light weather, - The propeller is a variprop (flagging) with adjustable pitch - The upper and lower dies have been replaced by a 24mm stainless steel tube (as on amel sailboats): safety and convenience, - Spare parts (including complete raymarine pilot in double) and impressive tools
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)
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