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A submarine tracking another submarine can take advantage of its target's baffles to follow at a close distance without being detected. Periodically, a submarine will perform a maneuver called clearing the baffles, in which the boat will turn left or right far enough to listen with the forward array sonar for a few minutes in the area that was previously blocked by the baffles.
When the ship is in freshwater, the hard steel surfaces of the sea chest, protective grates and baffles, combined with low water velocities created in this immediate area, provide a suitable environment for zebra mussel attachment. Zebra mussel infestations have been found to clog the individual intakes and gates of the various water piping ...
Instruments used to plot a course on a nautical chart. In navigation, the course of a watercraft or aircraft is the cardinal direction in which the craft is to be steered.The course is to be distinguished from the heading, which is the direction where the watercraft's bow or the aircraft's nose is pointed.
The vessel is classed by ABS and has the IMO number of 8765412. SBX departing Pearl Harbor, Hawaii on 31 March 2006. The first such vessel is scheduled to be based in Adak Island, Alaska, part of the Aleutian Islands. From that location it will be able to track missiles launched toward the US from both North Korea and China.
The Transit system, also known as NAVSAT or NNSS (for Navy Navigation Satellite System), was the first satellite navigation system to be used operationally. The radio navigation system was primarily used by the U.S. Navy to provide accurate location information to its Polaris ballistic missile submarines, and it was also used as a navigation system by the Navy's surface ships, as well as for ...
Ship grounding or ship stranding is the impact of a ship on seabed or waterway side. [1] It may be intentional, as in beaching to land crew or cargo, and careening , for maintenance or repair, or unintentional, as in a marine accident.
Bilge compartment in a steel hulled ship (looking down) Bilge compartment and pump The bilge / b ɪ l dʒ / of a ship or boat is the part of the hull that would rest on the ground if the vessel were unsupported by water.
Heading and track (A to B) 1 - True North 2 - Heading, the direction the vessel is "pointing towards" 3 - Magnetic north, which differs from true north by the magnetic variation. 4 - Compass north, including a two-part error; the magnetic variation (6) and the ship's own magnetic field (5) 5 - Magnetic deviation, caused by vessel's magnetic field.