Oceanographic equipment and telecommunications cables have also been damaged by this species.
These include water and gas pipelines, and fibre-optic telecommunications cables.
A major early use for galvanometers was for finding faults in telecommunications cables.
A separate code, the 25-pair color code, is used to identify wires in some telecommunications cables.
The tunnel also now carries a sewer pipeline and telecommunications cables.
Cable glands may be used on all types of electrical power, control, instrumentation, data and telecommunications cables.
There are multiple sites where telecommunications cables enter the building, and a provision has been made for a second electrical entrance, if needed.
Laying long telecommunications cables is an expensive business.
He noted that new telecommunications cables have been laid, and a gas pipeline is being built under the strait.
Hut facilities should be designed to allow the entry of telecommunications cables and local power supply into the building.