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The International Regulations for Preventing Collisions at Sea 1972, also known as Collision Regulations (COLREGs), are published by the International Maritime Organization (IMO) and set out, among other things, the "rules of the road" or navigation rules to be followed by ships and other vessels at sea to prevent collisions between two or more vessels.
Diagram showing principle of constant bearing, decreasing range in marine collision avoidance. When an observer sees another vessel at a constant bearing and the range continually decreases, collision is imminent. A ship seen to be on a constant bearing with decreasing range will collide with the observer's ship unless avoiding action is taken.
The original purpose of AIS was solely collision avoidance but many other applications have since developed and continue to be developed. AIS is currently used for: Collision avoidance AIS was developed by the IMO technical committees as a technology to avoid collisions among large vessels at sea that are not within range of shore-based systems.
The Brussels Collision Convention (formally, the Convention for the Unification of Certain Rules of Law with respect to Collisions between Vessels (French: Convention internationale pour l'unification de certaines règles en matière d'abordage)) is a 1910 multilateral treaty that established the rules of legal liability that result from collisions between ships at sea.
These include a need to navigate "blind", when there is poor or no visibility at night or due to bad weather such as fog. [3] In addition to vessel-based marine radars, in port or in harbour, shore-based vessel traffic service radar systems are used by harbormasters and coast guard to monitor and regulate ship movements in busy waters.
In transportation, collision avoidance is the maintenance of systems and practices designed to prevent vehicles (such as aircraft, motor vehicles, ships, cranes and trains) from colliding with each other. They perceive the environment with sensors and prevent collisions using the data collected from the sensors.
This phenomenon is caused by the water flow which accelerates as it passes between the hull and the seabed in confined waters, the increase in water velocity causing a resultant reduction in pressure. Squat effect from a combination of vertical sinkage and a change of trim may cause the vessel to dip towards the stern or towards the bow. This ...
Ship collision is a type of maritime incident, a violent encounter involving moving ships.While the standard definition of collision involves more than one moving ship, and an engagement between a ship and a motionless object is formally known as "allision", in practice the word "collision" is usually used to describe also the situation where a moving ship hits a stationary ship or a fixed ...