f. Recording: 
(1) To provide a graphic recording of the bottom, in feet and 
in fathoms. 
(2) Scaless 
(a) 0-100 feet 
(b) 0-600 feet 
(c) 0-1,500 feet 
(3) Recorder design should emphasize ruggedness, simplicity, 
compactness, ease of maintenance, and ease of annotating the recording 
trace. 
ge The transducer housing and sword-arm should be designed so that 
they can readily and easily be shipped and unshipped by two men. The 
same applies to the power pack-recording unit. 
Potential Users and Estimated Number of Units Which They May Requires: 
ae U. S. Navy (basic research, applied research, and hydrographic- 
oceanographic survey ships) - 20 to 40 
b. U. S. Coast and Geodetic Survey - 15 to 30 
c.- Certain activities within Scientific Community - 10 to 20 
d.- U. S. Coast Guard - 10 to 20 
e. U. S. Navy (Bureau of Ships) - Unknown 
f. Bureau of Commercial Fisheries - 10 to 30 
Totals 65 to 140 
Recommendations Where Instrument Should Be Researched and Developed: 
U. S. Industry. 
Relative Importance to U. S. National Oceanographic Program: 
Individual instrument/equipment priority 6. 
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