Underwater cable
The term ‘underwater cable’ refers to any cable that can withstand immersion in water. Usually, these kinds of cables are used in sonar applications, video and camera systems, sewer and well applications, geophysical applications and high energy supply. They are also used in aquariums for powering pumps and heaters required in their running and maintenance.
The first commercial underwater cables were laid in 1850 across the English Channel, consisting of simple copper wires coated with gutta percha.
These cables are manufactured with a special insulation and jacket extrusion and different types of fillers, tapes and other compounds help in preventing water from penetrating into the cables. These materials absorb and swell, due to which, if a cable accidentally gets damaged, the point of entry swells, thus blocking and preventing water penetration.
Underwater cables are also used for powered remotely operated under water vehicles and also for submarine communications, therefore carrying out telecommunication between different countries.
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