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| There are 93 entries in the glossary. |
| Pages: << < 1 2 3 4 5 6 7 > >> |
| Midchannel Buoy | A red and white vertically striped buoy used in the United States to mark the middle of a channel. Midchannel buoys may be passed by on either side. |
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| Middle Ground | Shoal area between two navigational channels. |
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| Midshipman | A non-commissioned naval rank. Midshipmen play a part, under supervision, in most of the ship's activities, and are in training for higher command. |
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| Midships | In the middle portion of the boat - Roughly halfway between a ship's stem and stern, and where the beam usually is the widest. |
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| Midwatch | the watch or work shift beginning at midnight, usually lasting until 4:00am or 8:00am. |
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| Mile | Distance at sea is measured in nautical miles, which are about 6067.12 feet, 1.15 statute miles or exactly 1852 meters. Nautical miles have the unique property that a minute of latitude is equal to one nautical mile - Measurement of speed is done in knots where one knot equals one nautical mile per hour. |
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| Millibar | A unit used to measure the barometric pressure of the atmosphere. 1 millibar equals 0.03 inches of mercury. |
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| Mizzen | A small sail set on the mizzenmast. |
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| Mizzenmast | The mast aft of the mainmast in a sailing ship - the shorter mast behind the main mast on a ketch or yawl, or the third aftermost mast of a three-masted schooner or square-rigged ship. |
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| Mold | A pattern or template. Also a shape of metal or wood over or in which an object may be hammered or pressed to fit. |
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| Mold Loft | The large enclosed floor where the lines of a vessel are laid out and the molds or templates made. |
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| Monkey | (1) A small wooden cask in which grog was carried. (2) A type of marine steam reciprocating engine where two engines were used together on the same propeller shaft. |
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| Monkey Fist | A large heavy knot usually made in the end of a heaving line to aid in accurate throwing. |
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| Monkey Jacket | A thick serge jacket worn by seamen while keeping watch at night or in stormy weather. |
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| Monohull | A boat with one hull. |
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