2　Terms and Symbols

2.1　Terms

2.1.1　Submarine repeater

Submarine optical signal amplifying equipment consisting of one or more regenerators or amplifiers and associated components.

2.1.2　Repeatered submarine cable system

A submarine system that deploys submarine repeater（s）.

2.1.3　Repeaterless submarine cable system

A submarine system that deploys no submarine repeater.

2.1.4　Beach manhole

A manhole set on the landing beach of submarine cable，used to terminate the submarine cable and connect it with land optical/power cable.

2.1.5　Cable landing point

The point where the submarine cable and the land cable are connected to each other，usually within a beach manhole.

2.1.6　Cable landing station

Terminal station of an optical fiber submarine cable system，where.

SLTE equipment，monitoring equipment and power feeding equipment may all be installed.

2.1.7　Sea wall

A wall built near the shore to block off sea water.

2.1.8　Segment

All devices of the optical fiber submarine system between two adjacent SLTE connected to the same pair of fibers.

2.1.9　Anchorage area

A special designated area where ships may anchor.

2.1.10　Landing section

Submarine cable from the beach manhole to where the sea depth is 5m.

2.1.11　Power feeding system

A power supply system that uses the loop formed by the earth and the power conductor in the submarine cable to provide power for submerged equipment.

2.1.12　Cable route desk top study

To propose one or more cable routes that are technically and economically viable based on the topological design of the submarine cable system and through collection and analysis of existing geophysical data，marine environment and marine development activities.

2.1.13　Route survey

Carrying out field survey for the cable route plans proposed in the cable route desk top study through geological sampling，geophysical survey，on-site observation，etc.，to ascertain the optimal route through comprehensive evaluation and comparison of information obtained，and to provide scientific and technical grounds for cable system design and installation.