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A submarine power cable is a transmission cable for carrying electric power below the surface of the water. [1] These are called "submarine" because they usually carry electric power beneath salt water (arms of the ocean, seas, straits, etc.) but it is also possible to use submarine power cables beneath fresh water (large lakes and rivers).
Subsea technology involves fully submerged ocean equipment, operations, or applications, especially when some distance offshore, in deep ocean waters, or on the seabed. The term subsea is frequently used in connection with oceanography, marine or ocean engineering, ocean exploration, remotely operated vehicle (ROVs) autonomous underwater vehicles (AUVs), submarine communications or power ...
It can be used for any electrical ship application up to 20 megawatts and operates at a nominal voltage of 1000 V DC. The DC distribution system is simply an extension of the multiple DC links that already exist in all propulsion and thruster drives, which usually account for more than 80 percent of the electrical power consumption on electric ...
Cable ships have unique requirements related to having long idle periods in port between cable laying or repairs, operation at low speeds or stopped at sea during cable operations, long periods running astern (less frequent as stern layers are now common), high maneuverability, and a fair speed to reach operation areas.
SS Avila Star, originally SS Avila, was a British turbine steamship of the Blue Star Line.She was both an ocean liner and a refrigerated cargo ship, providing a passenger service between London and South America and carrying refrigerated beef from South America to London.
Farrell Lines, Incorporated is a U.S.-based shipping company specializing in roll-on/roll-off (RO/RO) cargo transportation. Founded in 1925 as the American South African Line by James A. Farrell Jr. and John J. Farrell, the company initially served trade routes between the United States and South Africa.
One of the earliest and most critical tasks in a submarine pipeline planning exercise is the route selection. [5] This selection has to consider a variety of issues, some of a political nature, but most others dealing with geohazards, physical factors along the prospective route, and other uses of the seabed in the area considered.
Four cargo ships in the area went to assist. [4] One account states that the Hamburg America Line motor ship Ruhr rescued some of the surviving crew. [8] Another states that the Dutch steamship Achilles rescued the last crew to leave the ship, including men who were in the water. [4]