MULTI-PURPOSE, CONSTANT TENSION, HEAVY-DUTY OCEANOGRAPHIC WINCH 
Sketchs 
(To be provided) 
Primary Uses 
This winch will be used primarily to handle the majority of oceano- 
graphic instruments and will be utilized in most of the oceanographic 
survey operations. Some of these major types of operations includes: 
a. Conducting "ocean-station" operations with ship “lying-to", in 
oceanic areas, during which a multiple number of instruments and 
sensors will be lowered to interim or maximum depth. 
b. Conducting deep or shallow ocean-floor dredging with either 
light or heavy loads. 
c.- Conducting “bottom coring" operations. 
d.- Conducting “towed operations", at varying speeds, utilizing 
various oceanographic instruments either singly or in multiple group- 
ings. 
Requirements and Specifications: 
a. To be utilized for underway and stopped ("lying-to") operations. 
b.- To perform reliably at slow ship speeds (0-3 knots) under heavy 
deep-sea dredging loads and at high ship speeds (10-15 knots) under 
light trawling or towing loads. 
c. Cable Reelss 
(1) Should be designed so as to facilitate rapid removal and 
change of cable reels. 
(2) The "non-conducting" wire reel should have a capacity 
equivalent to 40,000 feet of 5/16 inch wire. 
(3) The "conducting" wire reel should be constructed of non- 
ferromagnetic material to reduce eddy losses and to minimize noise. 
(4) The "conducting" wire reels shall be capable of providing 
a number of electrical pick-offs, varying from 1 to 12. 
(5) The "conducting" wire reel shall have a capacity equivalent 
to 40,000 feet of 0.3 inch diameter "conducting" cable. 
d. The design shall incorporate a "winding machine" feature for 
controlled laying of the cable on the storage reel during in-haul. This 
feature must be adjustable to accommodate wire and cable sizes varying 
9 
