Instructions for echo sounding gear, type 752.
Subtitle: 1930 ...
Publisher: H.M. Stationery Off. [Printed by Harrision and Sons, Ltd.]
Published: 1930
Place of publication: London
Language: eng
Number of pages: 22
Subjects: Sounding and soundings
Other titles: Echo sounding gear.
Notes: At head of title: ... B.R. 309.
"The lords commissioners of the Admiralty have decided that a standard work on echo sounding gear is required for the information and guidance of officers and men of H.M. fleet, and Instructions for echo sounding gear, type 752, have been prepared accordingly."