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Nice 33 Ranger sailboat. We’ve owned her for four seasons. We planned to keep her for only three when we bought her, and then trade up. Currently in Eliot Maine at Kittery Yacht Yard. Generally in good shape, and was professionally winterized, but does currently need some work. I’ll either sell her cheap now as is, or have the yard complete the work, put her in the water and increase the price. We keep her on our mooring in Gloucester, and each year, we get mussel growth near the water inlet strainer. We normally remove it, and it’s fine. This year, when we noticed the growth, accompanied by a rise in water temperature, we removed what we could see of the growth on the strainer. When we ran the boat, I noticed the water temp would be fine below 1800 RPM, but would begin to rise towards 170* above 1800 RPM. I suspect there is some growth in the water inlet that I need cleaned out. This boat is fresh water cooled, and I have checked the heat exchanger to see if there is anything inside, and it’s clean as a whistle. There is water coming out of the wet exhaust, so I just suspect a small blockage in the inlet. This didn’t prevent us from motor-sailing her from the mooring in Gloucester last year up to the boat yard in Eliot with no issues. This was a day’s sail. Head, refrigerator, pressure water, and electrical systems worked fine when we operated them last year. Sails are generally in good shape for the age. If I were to keep the boat, I’d probably want to replace some of the running rigging. Standing rigging seems in good shape to me.. The yard talked about thinking about replacing it, but we’re NOT racers or “bury the toenail in the water” sailors, so it’s not something I would consider necessary. The rig held up just fine last year in a couple of good 25kt sailing trips. The Atomic 4 motor was overhauled by the previous owner. Sole is in nice shape. The deck light mounted on the spar got tangled in the halyard and came down, so there’s that. There was a hull scrape on the starboard side from a windy docking episode last year.
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)
On later boats, wheel steering became standard and a Universal diesel was offered as an option.
Shorter Rig:
I: 38.0’/11.58m
J: 13.87’/4.23m
P: 31.5’/9.60m
E: 11.0’/3.35
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