General Oceanics

General Oceanics

1295 N.W. 163rd Street, Miami, Florida, 33169, United States

  [email protected]     (305) 621-2882     (305) 621-1710

  Monday - Friday 7 AM - 5 PM


Blocks and Sheaves

General Oceanics blocks are designed to make your cable last.

Available sizes: .5M, 1M, 1.5M, 2M (sheave circumference)

NYLATRON sheaves reduce crown and cable wear. Weight is one seventh (1/7) the weight of equivalent sized sheaves. NYLATRON is a high strength cast nylon containing fine particles of molybdenum disulfide (MoS2), a solid lubricant; the increased lubricity aids in extending cable life.
COUNTERBALANCING keeps the sheave coplanar with the cable regardless of ship roll, pitch, and yaw under trawling/towing operations.
Available configurations: Counterbalanced, fairlead (non-counterbalanced) for reduced overall weight and height. Instrumented blocks are used to provide remote reading of cable payout and rate.

Meets the requirements of “Handbook of Oceanographic Winch,

Wire and Cable Technology” by Alan H. Driscoll.


Hydroblock Equipment and Accessories
  SKU Product Our Price
SR-16I Block, Snatch Aluminium 14" ID Instumented $3904.00
SR-12I Block,Smart,Snatch,Aluminium,12"ID Instrumented $3440.00
EWC-6 Counter Wire $2070.00
4050 Readout, Hydroblock PLEASE CALL
4040-.5I Block Nylatron Counterbalanced, .5M $11152.00
4040-.5 BLOCK NYLATRON COUNTERBALANCED,.5M $9241.00
4040-.5W BLOCK NYLATRON COUNTERBALANCED,.5M $11540.00
F4040-0.5 Block, Fairlead Non-Counterbal., .5M $7197.00
F4040-0.5W BLOCK,FAIRLEAD NONCOUNTERBAL.5M WIDE $10406.00
4040-.5WI Block Nylatron Counterbalanced, .5M Instrumented Wide $13431.00
F4040-.5WI Block, Fairlead Noncounterbal .5M $11391.00
F4040-0.5I BLOCK,FAIRLEAD NONCOUNTERBAL.5M INSTRUMENTED $9973.00
4041-1 Block Nylatron Counterbalanced , 1M $11578.00
4041-1I Block Nylatron Counterbalanced, 1M $12206.00
4042-1W Block Nylatron Counterbalanced, 1M Wide $16734.00
SR-12 Block Smart, Snatch Aluminium 12" Id $1220.00
SR-16 Block, Snatch Aluminium 14" Id $1150.00
MWC-2 BORE HOLE WIRE COUNTER, MECHANICAL $2495.00
DTPOS PAYOUT AND SPEED INDICATOR PLEASE CALL
PS06 SHEAVE, COUNTER PLEASE CALL
4042-1I Block Nylatron Counterbalanced, 1M Instrumented $15725.00
4041-1W Block Nylatron Counterbalanced, 1M, Wide Sheave $13644.00
4041-1WI Block Nylatron Counterbalanced, 1M Wide Sheave, Instrumented $15148.00
F4042-1I Block, 1M, Fl, Hd, Narrow, Instr. $15522.00
F4041-1I Block, Fairlead 1M Instrumented $10390.00
F4044-1.5I Block, Fairlead, 1.5M, Instrumented, Heavy Duty $19388.00
F4041-1 BLOCK,FAIRLEAD NON-COUNTERBAL.,1M $8443.00
F4042-1W Block, Fairlead Non Counterbal., 1M Wide $14578.00
F4042-1 Block, Fairlead Non-Counterbal., 1M $13634.00
F4041-1W Block, Fairlead Non-Counterbal., 1M Wide Sheave $11480.00
F4041-1WI BLOCK,FAIRLEAD NON-COUNTERBAL., 1M WIDE SHEAVE, INSTRUMENTED $12953.00
4042-1 Block Nylatron Counterbalanced, 1M $15642.00
4042-1WI Block Nylatron Counterbalanced, 1M $18314.00
4044-1.5 Block, 1.5 Meter, Counter-Balanced, Narrow Sheave $19151.00
4044-1.5I Block, 1.5M, Hd, Cbal, Narrow, Instr. $21258.00
4043-1.5W BLOCK NYLATRON COUNTERBALANCED 1.5M WIDE $19151.00
4043-1.5I Block Nylatron Counterbalanced 1.5 $17972.00
F4043-1.5W Block Nylatron Fairlead 1.5M Wide Sheave $17442.00
4044-1.5WI Block, Counterbalanced 1.5 Meter Instrumented $24343.00
F4043-1.5 Block, Fairlead 1.5 Narrow Sheave Nylatron $14046.00
F4043-1.5I Block, Fairlead 1.5M Instrumented Narrow Sheave $15849.00
F4043-1.5WI Block, Fairlead 1.5M Wide Sheave Instrumented $18916.00
F4044-1.5 Block, Fairlead 1.5 Meter (Narrow Sheave) $17265.00
F4044-1.5W Block, Fairlead 1.5 Meter (Wide Sheave) $20319.00
4043-1.5 BLOCK NYLATRON COUNTERBALANCED 1.5M $16084.00
4043-1.5WI Block Nylatron Counterbalanced 1.5M Wide Instrumented $20673.00
F4044-1.5WI Block, 1.5M, Hd, Fairlead, Wide, Instr. $22207.00
4044-1.5W Block, Counterbalanced 1.5 Meter $22220.00
4043-2I Block Nylatron Counterbalanced, 2M $19435.00
4043-2W Block Nylatron Counterbalanced, 2M $20449.00