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A polar diagram, or polar plot, is a graph that shows a sailboat's potential speed over a range of wind speeds and relative wind angles. [1] It normally consists of the right side of a line chart with the radius representing the yacht speed and the angle representing the wind direction blowing from top to bottom. Several lines are normally ...
Clewlines (green) and buntlines (red) for a single sail. The sail here is semi-transparent; fainter lines are running behind it. Clewlines and buntlines are lines used to handle the sails of a square rigged ship. The leechlines are clearly visible running inwards and upwards from the edges of the sail.
A rutter is a mariner's handbook of written sailing directions. Before the advent of nautical charts, rutters were the primary store of geographic information for maritime navigation. It was known as a periplus ("sailing-around" book) in classical antiquity and a portolano ("port book") to medieval Italian sailors in the Mediterranean Sea.
The boat has a draft of 5.25 ft (1.60 m) with the standard keel and 3.83 ft (1.17 m) with the optional wing keel. An optional tall rig has a mast about 2 ft (0.61 m) taller. The boat has a hull speed of 6.7 kn (12.41 km/h). [15] Catalina 30 Mark III This model was built between 1990-2008 and was designed by Gerry Douglas.
J&J Design is a naval architecture, design, boat and production-process engineering company, mainly for high-volume production sail and powerboat builders. It introduced the carbon-epoxy technology from the America's Cup into cruising sailboats with the Shipman line. J&J also designed and engineered the first serial production hybrid powerboats ...
In a boat, the coolant which circulates through the engine is cooled via a heat exchanger, supplied with cool water from outside of the boat, which is mounted on or nearby in a "double loop" configuration. [4] Side cutaway view of the Gray Marine 6-71
In a 2010 review Steve Henkel wrote, "the O'Day 192 is a nicely finished update of the O'Day 19. With limited interior space (just room for a child-sized V-berth and two adult-sized quarter berths), the designers decided against including room for a galley, though they did find space for a chemical head beneath the V-berth and an ice chest in the companionway.
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