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Search Area Determination and Search Unit Deployment

Published online by Cambridge University Press:  21 October 2009

John Astbury
John Astbury
Affiliation:
(HM Coastguard Headquarters)
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Extract

In any maritime emergency where time elapses from the start of the incident to the arrival of rescue units it is necessary to establish the most probable survivor area. The procedure for establishing a most probable area is known as search area determination and requires the calculation of one position from another, known respectively as the datum point (DP) – the most probable position of survivors – and the last known position (LKP) – the incident position with recourse to the effects of tide and wind. Under the present manual methodology of the search and rescue planning system (USCG 1973), the DP is given an error treatment comprising drift initial position and search and rescue unit navigational (SRU) errors. Error calculations produce a search area radius (R) which is ‘boxed’ and referenced by four corner coordinates given in latitude and longitude.

Type
Research Article
Information
The Journal of Navigation , Volume 40 , Issue 1 , January 1987 , pp. 63 - 72
Copyright
Copyright © The Royal Institute of Navigation 1987

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References

REFERENCES

HM Coastguard (1983). Operational Instructions CG 3. Search Planning.Google Scholar
United States Coast Guard (1973). Search and Rescue Planning System Users’ Manual.Google Scholar
United States Coast Guard (1973). The National Search and Rescue Manual.Google Scholar
United States Coast Guard (1983). Computer Aided Search Planning (ASP) Lesson Guide.Google Scholar
Inter-Governmental Maritime Organisation (1980). Merchant Ship Search and Rescue Manual (MERSAR), third edition.Google Scholar
Inter-Governmental Maritime Organisation (1982). IMO Search and Rescue Manual.Google Scholar
International Civil Aviation Organisation (1970). Search and Manual, Part 2: Search and Rescue Procedures.Google Scholar