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BS 7474(1991) : AMD 8554
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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SPECIFICATION FOR MARINE ECHO-SOUNDING EQUIPMENT
15-02-1995
23-11-2012
Committees responsible
National foreword
Specification
Section 1. General
1.1 Scope
1.2 Normative references
1.3 Definitions
Section 2. Requirements
2.1 General requirement
2.2 Range of depths
2.3 Range scales
2.4 Method of presentation
2.5 Safety
2.6 Pulse repetition rate
2.7 Measurement accuracy
2.8 Roll and pitch
Section 3. Test methods and required test results
3.1 General underwater test conditions
3.2 Range of depths
3.3 Range scales
3.4 Method of presentation
3.5 Safety
3.6 Pulse repetition rate
3.7 Measurement accuracy
Annex
A Sound absorption coefficient
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