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For Sale: 1972 Fully Restored 35ft Bluewater Ketch
38ft LOA Ferro-cement cruising ketch for sale. Your small ship has come in: asking $27,000. All offers considered.
$40K in upgrades in the last two years alone. Proven offshore to Cuba and Mexico. Gorgeous interior. Dry as a bone. Clean bottom. Shoal draft, centerboard. Custom built in 1972. Hull insured for $40K. Fully restored beginning 2005 . Repowered 35HP Yanmar 2010 Dripless Prop-Shaft Seal 2022 New centerboard winch & cable, rebuilt trunk & case 2023 New cushions, lee cloths, dodger, bimini, sail covers 2023 Complete ABYC rewire & grounding system 2024.
Complete listing and gallery at: www.samsonketch.com. The Sandpiper is located in New Bern, North Carolina and ready to leave the nest! CALL to schedule a showing, 631-599-8521.
Equipment: Please see complete listing and gallery at : www.samsonketch.com
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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