UNDERWATER CAMERA 
Sketchs 
(To be provided) 
Primary Use: 
To be utilized on oceanographic survey ships for the purpose of 
obtaining close-up photographs, both single-frame and stereo, of the 
detailed topography of the sea floor. It will also be employed for 
photogrammetric mapping of the sea floor. 
Requirements and Specifications: 
a.» To be utilized primarily for stopped ("lying-to") operations 
but also for slow-speed operations with ship underway at 0-5 knots. 
b. To be operable in coastal and oceanic waters, at. depths of 
0-6,500 fathoms. 
c. Film capacity: Approximately 100 to 150 feet of 70mm film. 
d. Photouraphic distances 
(1) Single-frame photoyraphs: should accept object distances 
of 2-30 feet. 
(2) Stereo photographs: should accommodate close (2 feet) and 
long (35-50 feet) object distances. 
e. The camera instrument must include, or have attached thereto, 
a device which measures and indicates at all times to an observer on 
deck the precise height of the camera unit above the sea floor. 
f. A deep-water, synchronized illuminating device must be incor- 
porated in this instrument in order to light adequately the photographic 
field. 
gy. The instrument must incorporate variable, pre-programmed shutter 
operation to provide for both continuous and time-series studies. 
h. The camera unit must be capable of taking both horizontal and 
vertical underwater photographs. 
Sil 
