Getting the right pitch

Article Abstract:

Measuring propellers alignment can now be determined with a device developed by Australia-based Propeller Dynamics. A computerized pitchmeter can determine the accuracy of a propeller. Prices for the prop scans are free, but readjustments may be as much as $440 per propeller.

Methods, Management, Equipment and supplies, Stability of ships, Ship stability, Propellers, Variable pitch, Variable pitch propellers

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Don't neglect the blade area

Article Abstract:

The blade area of a boat's propellers must be great enough to absorb the engine's power or cavitation will result. A formula for calculating the minimum blade are need by the average boat is presented.

Planning, Purchasing, Propellers

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Lean & mean

Article Abstract:

Boats with long lean hulls are better than conventional, heavy boats. They are not only faster and easily driven in head seas but they can also maintain higher speed in elevated sea states.

Analysis, Design and construction, Hulls (Naval architecture), Boats and boating, Boating, Boats

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