The actual search radius used to plan the search and to assign search facilities. It is usually based on adjustments to the optimal search radius that are needed for operational reasons.

Related Terms

AMVER SYSTEM

Operated by the U.S. Coast Guard, the Amver System is a maritime mutual-assistance program that aids coordination of search and rescue efforts by maintaining a worldwide computerized DR plot of participating vessels.

AUTOMATED MUTUAL-ASSISTANCE VESSEL RESCUE SYSTEM

Operated by the United States Coast Guard, the AMVER System is a maritime mutual assistance program that aids coordination of search and rescue efforts in the oceans of the world, by maintaining a computerized worldwide merchant vessel plot.

EMERGENCY POSITION INDICATING RADIOBEACON STATION

As defined by the International Telecommunication Union (ITU), a station in the mobile service whose emissions are intended to facilitate search and rescue operations.

EMERGENCY POSITION INDICATING RADIOBEACON

A small portable radio- beacon carried by vessels and aircraft which transmits radio signals which can be used by search and rescue authorities to locate a marine emergency.

RCC

Rescue co-ordination centre: Land-based authority conducting and coordinating search and rescue operations in a designated area

SEARCH PATTERN

A pattern according to which vessels and/or aircraft may conduct a coordinated search (the IMOSAR offers seven search patterns)

MERSAR

Merchant Ship Search and Rescue Manual published by IMO

SART

Search and Rescue Transponder a portable radar transponder for use in survival craft, which transmits homing signals in the 9 GHz band

TARGET DATUM

The most probable position of a search target at a given time

CSS

Co-ordinator surface search: A vessel, other than a rescue unit, designated to co-ordinate surface search and rescue operation within a specified area

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