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Description of vessel from 5/2018 survey, rated above avg- BUC - market Value of $52,000: “This is one of the famous Choate racing vessels; the finest in its day with: rod standing rigging, hydraulic boom-vang, back-stay and baby stay, fin all lead keel, one-inch stainless steel keel-bolts (8), two full sets of sails with carbon-fiber racing sails along with normal Dacron sails, eight Barient winches with blocks, cars on tracks and new Volvo Penta engine. From the aft cockpit enter the main salon through the companionway down a heavy wooden ladder. Aft is the full navigation station, vee-drive engine and twin quarter-berths. Forward are the galley, twin settee/berths, manual head, and vee-berth for the master-stateroom.”
Christened Sixpence and designed, unique flush deck, and owned by the famed California designer himself, Dennis Choate. He then sold her (I found a 1981 list price of $104,000) to a doctor who raced her in three Transpac Races as Audacious. She performed very well; with a crew of seven taking 2nd place missing 1st by just under ten minutes (see Tpac footage 1000nm offshore :http://abriefhistory.org/?p=4532). Next owner raced in the San Francisco Bay and Delta as Bottom Line. Others liken her to a more beamy Swan 40. This performance racer or racer/cruiser would be ideal for a couple or someone who wants to go out with friends for some lively, responsive, fun sailing and at a very low entry price, especially 40 feet. With a lot of bluewater miles under her keel I would love to see her go to someone who wants to take her back for another Transpac (or Pac Cup) or cruising. She isnt far off from being ready to go. With a large suite of sails, gear for offshore racing, even a new engine (new in 2014, just 90hrs on her) and haul out 9/2019.
Choate 40 forum discussion: http://forums.sailinganarchy.com/index.php?/topic/48696-choate-40s/ http://forums.sailinganarchy.com/index.php?/topic/60466-older-well-known-ior-boats/&page=11 2015 Latitude 38 mention: https://www.latitude38.com/lectronic/dar
Equipment: 2014 Volvo Penta D-2F40: 90hrs 19G Diesel Tank, plastic Water, 29G, platic Newer Force 10 stove 1- Jabsco head, manual 28G holding tank 4 - 12v AGMs - new 2013 VHF IC-70, Raymarine C-70 Plotter, radar multi func., Raymarine GPS, Speed, Autohelm, Suunto racing compass, Clock & Barometer are Weems & Plath, Masthead antennas. Fridge is an icebox an SS sink. 30$ Danforth, no windlass, swim ladder, Canvas Dodger, hydraulic system for adjusting the rigging.
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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