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Careening (also known as "heaving down") is a method of gaining access to the hull of a sailing vessel without the use of a dry dock. It is used for cleaning or repairing the hull. It is used for cleaning or repairing the hull.
Some vessels are designed to be loaded and unloaded by beaching; vessels of this type used by the military to disembark troops under fire are called landing craft. During the age of sail, vessels were sometimes beached to allow them to be rolled over for the hull to be maintained, a process called careening.
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. In accidental cases, it is commonly referred to as "running aground".
The Great Balance Dock was built of wood planking and timbers. She was 325 feet (99 m) long, 99 feet (30 m) in breadth, and 38.5 feet (11.7 m) in height. The dock contained 12 water-tight compartments, which could be flooded to lower the dock sufficiently for a vessel to enter it, and could be pumped out to lift a vessel free of the water.
Copper sheathing is a method for protecting the hull of a wooden vessel from attack by shipworm, barnacles and other marine growth through the use of copper plates affixed to the surface of the hull, below the waterline. It was pioneered and developed by the Royal Navy during the 18th century. In antiquity, ancient Chinese used copper plates ...
Pakistan Maritime Security Agency (Navy's maritime law enforcement branch equipped with larger vessels to patrol Pakistan's EEZ) Pakistan Coast Guards (PCG is a law enforcement agency equipped with small patrol boats for coastal operations) Karachi Naval Dockyard; Currently active military equipment by country
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A floating sheerleg (also: shearleg) is a floating water vessel with a crane built on shear legs. Unlike other types of crane vessel, it is not capable of rotating its crane independently of its hull. There is a huge variety in sheerleg capacity.