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A slipway, also known as boat ramp or launch or boat deployer, is a ramp on the shore by which ships or boats can be moved to and from the water. They are used for building and repairing ships and boats, and for launching and retrieving small boats on trailers towed by automobiles and flying boats on their undercarriage .
In craft with the electric system, the wheels are equipped with brushless high-torque electric motors, and powered by a central 48-volt 7-kWh lithium battery pack. [ 1 ] Sealegs began production in 2005, and as of September 2015 [update] the company had sold 1000 units into 50 countries.
The deck (floor) is composed of four interlocking aluminum plates, which are fixed to the "thrust board" at the bow end and the transom at the stern. This rigid structure, spanning the entire internal area of the boat, prevents the hull from collapsing or "taco-ing" under power.
Some modern patrol vessels are equipped with a stern launching ramp, or simply launching ramp, for deploying smaller rescue or pursuit boats without requiring the parent ship to first come to a halt. [ 1 ] [ 2 ] [ 3 ] Typically the smaller craft are powered by water-jets, and can drive themselves up the ramp by their own power.
Hunter 25-2 showing rudder and walk-through transom. The Hunter 25-2 is a recreational keelboat, built predominantly of fiberglass, with wood trim.It has a B&R masthead sloop rig with aluminum spars, a raked stem, a walk-through, rounded reverse transom, a transom-hung rudder controlled by a wheel and a fixed fin shoal draft keel.
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They were constructed of welded aluminum plates. The boats were 65 feet (20 m) long with a beam of 17 feet (5.2 m). They weighed 69,000 pounds (31,000 kg). These boats cruised at 19 knots driven by two propellers 32 inches (81 cm) in diameter. Each was driven by a 12V171 Detroit Diesel engines which produced 400 horsepower. Their fuel tanks had ...
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