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1987 CAL 33 SAILBOAT
This Cal 33, hull #108, is a super nice example with its great cockpit and cabin layout. This is a very comfortable, sporty and easy sailing design by Raymond Hunt. This boat has some nice upgrades like stainless steel winches, sunbrella bimini, sunbrella mainsail stow system/lazy jacks, autopilot and a very dependable yanmar engine. loa:33 lwl:27.5 beam:11.3 disp.: 10800 ballast 4750 (exterior, lead, epoxy coated 2019) fuel: 24g water: 56g holding: 15g Accommodations The Cal 33 has a great layout for a cruising couple or small family. The interior gives you a wide open feeling with its two double berth at either end of the boat creating an unusually airy feeling to this size boat. the forward berth have a bureau and hanging locker. There are shelves on either side of the v-berth. The mattress is a custom spring mattress. Just aft to starboard is the head with hatch and operable lite ventilation. The central part of the boat is the dining area, galley, and nav center. There is a traditional single settee to port and a large u-shape settee with dinette table to starboard. The motor is positioned beneath the companionway steps. There is a large double quarterberth aft. The cabin has a hatch and ports that open for ventilation. There are two stainless steel dorade vents which constantly refresh the air. There is 6’ headroom throughout the vessel Galley The galley is to port of the companionway and ladder. There is a Stainless steel 2 burner propane stove and oven and a deep double bowl stainless steel sink. The isotherm sp compact classic refrigeration system was new in 2012. There is good storage for cookware, dishes and dry goods. There is good counter work space for preparing onboard meals.
Equipment: Sails and Rigging Isomat, tapered, anodized aluminum mast with double spreaders. Stainless steel wire rigging. New reefing & running lines in 2020. Internal main and jib halyards. New in 2011 harken mk iv roller furler. Genoa tracks with stops on each end. The traveler is coach roof mounted. New in 2011 Doyle Cradlecover on mainsail with laz
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)
Shoal draft: 4.50’.
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