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The capsize screening formula (CSF) is a controversial method of establishing the ability of boats to resist capsizing. It is defined for sailboats as: Beam / ((Displacement/64.2) 1/3), with Displacement measured in pounds, and Beam in feet. A lower figure supposedly indicates greater stability, however the calculation does not consider factors ...
Isis was a steel steamer, 377 gross tons, 256 net tons, with a length of 180.4 feet, beam of 24.8 feet and 11.7 foot draft. She had an indicated horsepower of 2,000 for a speed of 16 knots with capacity for 120 tons of coal with a complement of eight officers and forty-four men. [ 2 ]
This gave a characteristic bumped look to many boats, particularly at the point of maximum beam and in the stern. Also, as stability was only measured at very low heel angles (less than 5 degrees), boats were designed with a very narrow waterline and low stability in measurement trim, but a hull form that gained stability with the weight of the ...
Graphical representation of the dimensions used to describe a ship. Dimension "b" is the beam at waterline.. The beam of a ship is its width at its widest point. The maximum beam (B MAX) is the distance between planes passing through the outer sides of the ship, beam of the hull (B H) only includes permanently fixed parts of the hull, and beam at waterline (B WL) is the maximum width where the ...
Hogging is the stress a ship's hull or keel experiences that causes the center or the keel to bend upward. Sagging is the stress a ship's hull or keel is placed under when a wave is the same length as the ship and the ship is in the trough of two waves.
A beam reach is when the true wind is at a right angle to the direction of motion (so called because the wind is parallel to the cross-hull beams, if any; see beam). A broad reach is when the wind is coming from behind the sailing craft at an angle. This represents a range of wind angles, between a beam reach (see next paragraph) and running ...
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Navigation status Day shape Restriction 1. Anchored Ball not required if < 7 m and where vessels normally do not navigate 2. Vessel under sail and power Cone, apex down 3. Vessel towing Diamond Tow > 200 m 3. Vessel being towed Diamond Tow > 200 m 4,11. Fishing (with restricted maneuvrability) 2 cones (apexes together)