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In many modern boats, the heads look similar to seated flush toilets but use a system of valves and pumps that brings sea water into the toilet and pumps the waste out through the hull (in place of the more normal cistern and plumbing trap) to a drain. In small boats the pump is often hand operated.
The reason for this is that when the boat is level, the drain or other opening will always be above the waterline, and so water will only flow out. At sea, when the boat rolls in the waves, the opening may sometimes be below the waterline. If the seacock is open, water may flood the boat, causing it to sink. Sea valve at lower right
Boat building is the design and construction of boats (instead of the larger ships) — and their on-board systems. This includes at minimum the construction of a hull , with any necessary propulsion, mechanical, navigation, safety and other service systems as the craft requires.
German submarine U-1206 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II.She was laid down on 12 June 1943 at F. Schichau GmbH in Danzig and went into service on 16 March 1944.
Leisure 17 in Spiekeroog Leisure 17 SL. The Leisure 17 was built between 1967 and 1996. A total of between 3000 and 4500 units were built, the exact numbers are not known due to the company records being lost in a fire in 1990.
Equipped with a spinnaker, trapeze and a large sail-area-to-weight ratio, it is designed to plane easily, and good teamwork is necessary to sail it well. The name comes from the boat's length of 470 centimetres (4.7 m; 15 ft 5 in). The 470 is a World Sailing International Class and has been an Olympic class since the 1976 games. [1]
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The Soling is a strong boat designed for any wind and sea condition by Jan Herman Linge from Norway in 1964. [6] The boats are one-design originating from an authorized single plug and mould system and made of fiberglass. This together with a strict set of class rules makes competition possible on a "level playing field". [1]