Tips About motor boat
Most monohulls larger than a dinghy require ballast, depending on the design ballast will be 20 to 50 percent of the displacement. The ballast is often integrated into their keels as large masses of lead or cast iron. This secures the ballast and gets it as low as possible to improve it's effectivness. External keels are cast in the shape of the keel. A monohull's keel is made effective by a combination of weight, depth and length.
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Jetboats were originally designed by Sir William Hamilton (who developed a waterjet in 1954) for operation in the fast-flowing and shallow rivers of New Zealand, specifically to overcome the problem of propellers striking rocks in such waters.
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Before 1990, personal watercraft emissions were unregulated in the United States. Many were powered by two-stroke cycle engines, which are smaller and lighter than four-stroke cycle engines but much more polluting. Simple two-stroke engines are lubricated on a "total loss" method, mixing lubricating oil with their fuel; they are estimated to exhaust in excess of 25% of their fuel and oil unburned in addition to the products of incomplete and complete combustion.
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Boating, Sailing And Marine Galore
Good Cruising And Sailing Quotes...
Thu, 23 Aug 2007 22:40:55 +0200
Cruising let’s you share a back porch with a billionaire.
Many more quotes ...
Lough Derg RNLI Lifeboat rescues 4 persons onboard a vessel that grounded South
Seasickness?
Mon, 6 Nov 2006 20:08:44 +0200
Use the original Sea-Band for seasickness while out sailing - The Sea-Band has been clinically tested against nausea and vomiting in travel, helping combat seasickness. It's also been proven to be effective in pregnancy, anaesthesia, chemotherapy and all conditions which induce nausea.
Details.....
Mercury Marine cuts deeper into workforce
Thu, 11 Dec 2008 19:21:04 GMT
A decline in boat sales has Mercury Marine cutting deeper into its Fond du Lac workforce.