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2. (Usually in the plural: "bilges") The compartment at the bottom of the hull of a ship or boat where water collects and must be pumped out of the vessel; the space between the bottom hull planking and the ceiling of the hold. [2] 3. To damage the hull in the area of the bilge, usually by grounding or hitting an obstruction. 4.
Hull speed or displacement speed is the speed at which the wavelength of a vessel's bow wave is equal to the waterline length of the vessel. As boat speed increases from rest, the wavelength of the bow wave increases, and usually its crest-to-trough dimension (height) increases as well. When hull speed is exceeded, a vessel in displacement mode ...
Also ship's magazine. The ammunition storage area aboard a warship. magnetic bearing An absolute bearing using magnetic north. magnetic north The direction towards the North Magnetic Pole. Varies slowly over time. maiden voyage The first voyage of a ship in its intended role, i.e. excluding trial trips. Maierform bow A V-shaped bow introduced in the late 1920s which allowed a ship to maintain ...
One hypothetical sailing ship approach is discovering something equivalent to the parallelogram of force between wind and water which allows sails to propel a sailing ship. Picking up fuel along the way — the ramjet approach — will lose efficiency as the space craft's speed increases relative to the planetary reference.
The vertical/Z axis, or yaw axis, is an imaginary line running vertically through the ship and through its centre of mass. A yaw motion is a side-to side movement of the bow and stern of the ship. The transverse/Y axis, lateral axis, or pitch axis is an imaginary line running horizontally across the ship and through the centre of mass. A pitch ...
A sailing vessel characterized by a single mast carried well forward (i.e., near the bow of the boat) Clipper A fast multiple-masted sailing ship, generally used by merchants because of their speed capabilities Coastal defense ship A vessel built for coastal defense Cog Plank built, one mast, square rigged, 12th to 14th century, superseded the ...
In this sense, a ship is a vessel with three or more masts, all of which are square-rigged. For clarity, this may be referred to as a full-rigged ship or a vessel may be described as "ship-rigged". [b] Alongside this rig-specific usage, "ship" continued to have the more general meaning of a large sea-going vessel. Often the meaning can only be ...
A shuttlecraft, also known as a shuttle spacecraft, shuttle ship, drop shuttle, drop spacecraft, or dropship, is a type of spacecraft described in theory and science fiction. Serving the same purpose as a ship's tender , it is a smaller vessel that is launched from a mother ship , and has the ability to transport people or cargo between ships ...