SUB-SEA FLOOR STRATA PROFILER 
Sketches: 
(To be provided) 
Primary Use: 
To be utilized by oceanographic survey ships in determining the 
types, characteristics, and discontinuities in the upper layer sedi- 
ments which cover the sea floor. In those oceanic areas where the 
sediment carpet is thin, it will be utilized to provide pertinent in- 
formation concerning the basement rock structure. 
Requirements and Specifications: 
ae To perform reliably on oceanographic survey ships with the 
ship stopped ("lying-to") or underway at ship speeds of 0-10 knots. 
b. The instrument shall be designed to perform reliably in ocean 
areas varying in depth from 0 to 6,500 fathoms. Within this depth of 
water range, it shall be capable of penetrating sediments to at least 
2,000 feet in depth. 
ce The transducer(s): 
(1) Shall include a fixed active transducer (or other sound 
source) attached to the ship's hull, and/or 
(2) It shall have an active streamlined transducer (or other 
sound source) capable of being towed at a depth suitable for maximum 
sediment penetration. 
d. Recorders 
(1) Shall afford maximum accessability for immediate reading 
and marking of traces. 
(2) In addition to a selection of fixed recorder paper speeds, 
it shall provide variable paper speeds to conform to own ship's speed. 
(3) It shall permit direct navigational position data on the 
trace. 
(4) This recorder shall be located with and controlled by the 
Master Shipboard Data Logging and Processing system wherever that 
system is available. 
Jat 
