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The Swedish silver medalist Sans Atout at 1912 Summer Olympics. The Finnish eights Sphinx (FIN–4) and Sagitta (FIN–2) competing in 2012.. The International Rule was set up in 1907 to replace earlier, simpler handicap system which were often local or at best, national, and often also fairly simple, producing extreme boats which were fast but lightly constructed and impractical.
For the International rule, the rating number is approximately equal to the sailing length of the hull. These boats have long overhangs which allow the waterline length to increase as the boat heels over. A displacement hull's maximum speed (the hull speed) is directly proportional to the square root of its waterline length. [2]
Berths are either general or specific to the types of vessel that use them. The size of the berths varies from 5–10 m (16–33 ft) for a small boat in a marina to over 400 m (1,300 ft) for the largest tankers. The rule of thumb is that the length of a berth should be roughly 10% longer than the longest vessel to be moored at the berth. [why?]
Lake boats in the 600-and-700-foot (180 and 210 m) classes are more common, because of the limitations of the Welland Canal. These vessels vary greatly in configuration and cargo capacity, being capable of hauling between 10,000 and 40,000 tons per trip depending on the individual boat.
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Below is a list of NEMA enclosure types; these types are further defined in NEMA 250- Enclosures for Electrical Equipment. Each type specifies characteristics of an enclosure, but not, for example, a specific enclosure size. Note that higher numbers do not include the lower-numbered tests. For example, types 3, 4 and 6 are intended for outdoor ...
In 1948 in the US, a Water Pollution Control Act (WPA) was passed by the federal government. [8] This act gave rights to the surgeon general of the public health service to make programs to decrease the amount of pollution in the world's waters. The main concern was to save water, protect fish, and have clean water for agricultural usage.
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