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Users can submit photographs of the vessels which other users can rate. The basic MarineTraffic service can be used without cost; more advanced functions such as satellite-based tracking are available subject to payment. [3] The site has six million unique visitors on a monthly basis. In April 2015, the service had 600,000 registered users. [4] [5]
The second Port Royal (CG-73) was assigned hull number CG-69 on 9 May 1989, but that number was reassigned to guided missile cruiser USS Vicksburg and CG-73 to Port Royal on 8 December 1989; was laid down on 18 October 1991, [2] at Pascagoula, Mississippi, by Ingalls Shipbuilding, Litton Industries; launched on 20 November 1992; sponsored by Susan G. Baker (wife of James A. Baker III, Chief of ...
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.
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.
AIS is intended to assist a vessel's watchstanding officers and allow maritime authorities to track and monitor vessel movements. AIS integrates a standardized VHF transceiver with a positioning system such as a Global Positioning System receiver, with other electronic navigation sensors, such as a gyrocompass or rate of turn indicator .
Vessel Monitoring Systems (VMS) is a general term to describe systems that are used in commercial fishing to allow environmental and fisheries regulatory organizations to track and monitor the activities of fishing vessels. They are a key part of monitoring control and surveillance (MCS) programs at national and international levels.
A tracking ship, also called a missile range instrumentation ship or range ship, is a ship equipped with antennas and electronics to support the launching and tracking of missiles and rockets. Since many missile ranges launch over ocean areas for safety reasons, range ships are used to extend the range of shore-based tracking facilities.
Yuan Wang 6, like its sister ship Yuan Wang 5, is also a third generation tracking ship of Yuan Wang series. Designed by the 708th Research Institute, construction begun in April 2006, and the ship was launched on March 16, 2007. The ship entered service on April 12, 2008, and become fully operational in July 2008.