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1984 Westerly Sealord ketch. Seller is very motivated and will consider all reasonable offers. I have lived on the boat for almost 9 years, can be easily be sailed single handedly or with a crew. I have sailed her through the Bahamas and Eastern Caribbean with no issues, just ready to move to land for a bit. The boat handles easily and sails strong. The boast could use some cosmetic work, but is sea worthy.
Equipment: New running and rigging blocks rigging was checked in 2019 Mack Pack sails less than 10 years old Village Marine Water Maker 6gph 420 watt solar power Airx 400 watt Wind Generator Volvo 38 hp Diesel motor 4 burner stove with oven 2 Lavac heads 2 showers 100ft 5/16 chain 2 years old AP24 Simrad autopilot Spare parts for pumps ect. 9’ Caribe Dinghy with a 9.8 hp mapi
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)
Sloop or Ketch.
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