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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 ...
Bringing a person or thing up short; i.e. an unforeseen and sudden stop. [9] allision The impact of a moving vessel with a stationary object (not submerged), such as a bridge abutment or dolphin, pier or wharf, or another vessel made fast to a pier or wharf. More than incidental contact is required.
Nautical operations refers to the crew operation of a ship.It is the term used in academic education to refer to the studies of this professional field. [1] [2] [a] Nautical operations refers to all the operational procedures, specific roles of officers and crew members, and regular functions and technical processes, which together shape the structure and functions for the general operations ...
3. Farther from the hull of a ship; e.g. "the larger boat was tied up alongside the ship outboard of the smaller boat". 4. Farther from the pier or shore; e.g. "the tanker and cargo ship were tied up at the pier alongside one another with the tanker outboard of the cargo ship". 5. An outboard motor. 6. A vessel fitted with an outboard motor.
Full is greater than standard but not as great as flank. In surface ship nuclear marine propulsion, the difference between full speed and flank speed is of lesser significance, because vessels can be run at or very near their true maximum speed for a long time with little regard for fuel expended, an important consideration for oil-fueled ships ...
In a time charter, the vessel is hired for a set period of time, to perform voyages as the charterer directs. [102] In a bareboat charter, the charterer acts as the ship's operator and manager, taking on responsibilities such as providing the crew and maintaining the vessel. [103] The completed chartering contract is known as a charter party. [104]
The deadly waterspouts thought to have caused Sicily boat tragedy. 12:30, Barney Davis. In Italy waterspouts can involve winds of up to 200 kilometres (124 miles) per hour, while downbursts can ...
Diagram of a chip log attached to a log-line and reel on a ship. A chip log, also called common log, [1] ship log, or just log, is a navigation tool mariners use to estimate the speed of a vessel through water. The word knot, to mean nautical mile per hour, derives from this measurement method.