nautical miles per hour (1 nautical mile = 1 852 metres)

Kilowatt (1 000 watts). A measurement unit of radio and electrical power (see watt).

An EPIRB operating in the 1.6 GHz frequency band through the Inmarsat satellite system (also known as an Inmarsat EPIRB)

An earth station in the maritime mobile

Low Earth Orbit Local User Terminal. As used in the Cospas–Sarsat system. See also LUT.

see Land Earth Station

Low Frequency (3 to 30 kHz)

Local Sea Safety Messages. Contain warnings which refer to hazards which are considered to be of a temporary nature, eg. floating logs, temporary buoys, etc, broadcast for a defined period.

A ground receiving station which receives data from COSPAS and SARSAT satellites, calculates the position of the beacon and forwards the resultant information to rescue authorities.

Transmissions intended to facilitate the location of ship in distress or survival craft.