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Marine navigation is the art and science of steering a ship from a starting point (sailing) to a destination, efficiently and responsibly. It is an art because of the skill that the navigator must have to avoid the dangers of navigation, and it is a science because it is based on physical , mathematical , oceanographic , cartographic ...
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When lit, they are also usable at night. Customarily, the upper mark is up-hill from the lower (forward) mark. The mariner will know the geometry of the marks/lights from the navigational chart and can understand that when "open" (not one above the other) the ship needs to be navigated to "close" the marks (so one is above the other) and be in ...
Two sample pages of the 2002 Nautical Almanac published by the U.S. Naval Observatory. A nautical almanac is a publication describing the positions of a selection of celestial bodies for the purpose of enabling navigators to use celestial navigation to determine the position of their ship while at sea.
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The five essentials of sailing describes the five key things that a dinghy sailor uses to sail the boat as efficiently as possible. The five essentials are: [1] [2] [3] Boat balance - which side the sailor sits on and how far out to make sure the boat sails level.
It contains authoritative information about boating rules, weather, tide, currents, navigation, seamanship for powerboats, small craft, and boats under sail; anchoring, communications, and navigation; inland boating, marlinspike seamanship, and boating customs. It is often used as the text for private boating schools throughout the U.S.
Today, sailors from Maine to California make this race an invariable part of their summer. Moreover, each year the Mac hosts sailors from as far off as Hong Kong, New Zealand and Australia. Although the Mac remains primarily an amateur event, this race has a proven track record of attracting some of the finest sailing talent in the sport.