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Fancy cruising the Caribbean? Looking for a solid, well-equipped boat already down there? Jamar is a 1986 First 405 with a shoal draft keel and triple-spreader rig option. There was lots of work done by a previous owner (around 2000) to create a very functional, safety oriented boat. Most systems are older, but well designed and laid out making for easy upgrades. Jamar sails very well and is a wonderful platform to start your sailing adventures. Traditional two cabin, two head layout. Forward V-berth cabin with head. Mid-salon with table folding out on both sides; easy seating for six. U-shaped galley to port with 2-burner stove and oven. Large aft head to port. Master cabin to starboard.
Happy to respond to direct messages.
Boat located in Grenada, WI.
Equipment: New B&G DST transducer & screen, inner forestay with jib & storm jib, radar, SS arch with solar, wind generator, Monitor windvane, newer refrigeration, new heads, SSB radio feathering prop, Vesper AIS tx, B&G Zeus 7. Perkins 4108; 2500hours.
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: 5.5’/1.69m.
Tall Rig:
I:52.10’/15.88m
J:14.80’/4.51m
P:46.20’/14.08m
E:15.00’/4.57m
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