ASTM-F957 › Historical Revision Information
Standard Specification for Gong, Sound Signaling
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The following bibliographic material is provided to assist you with your purchasing decision:
1.1 This specification covers gongs for use on ships 100 m or more in length, as required by International Regulations (see Appendix X1).
1.2 For consistency with International Regulations, all measurements are in SI units.
clapper; gong; gong cylinder; signaling; sound signaling; ICS Number Code 47.020.70 (Navigation and control equipment)
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Sept. 25, 1987