Smith Berger Marine, Inc.
Marine Hardware and Salmon Processing Equipment
7915 10th Avenue So.
Seattle, WA   98108

Oceanographic Hanging Snatch Blocks

Dimensional Drawing
Standard Features
 Designed for breaking strength of wire with 135o wrap on sheave
 Nylatron sheaves are ideal for use with wire rope, electro-mechanical or fiber optic cables
 Sealed grease lubricated Timken tapered roller bearings
 Wide throat allows for passage of wire end fittings and connectors
 Adjustable counterweights
 Heavy duty swivel

Optional Features
 Steel sheaves           Other sizes available
 Load monitoring system
 Paint to your specification
 Third party certification
Model
No.
Max Wire Size Wire
Breaking

Strength
(lbs)
Sheave Tread Dia (All measurements in inches unless otherwise noted) Weight (lbs)
A B C D E
22-NC 3/8 14,800 19 5/8 55 3/4 25 1/2 10 3/4 500
52-NC 3/4 57,000 47 1/4 102 5/8 57 3/8 10 3/4 24 3/4 1700
Model
No.
Max Wire Size Wire
Breaking

Strength
(kN)
Sheave Tread Dia (All measurements in MM unless otherwise noted) Weight (Kg)
A B C D E
22-NC 19 66 498 1416 635 241 254 146 227
52-NC 25 254 1200 2607 1457 273 610 146 771

Oceanographic Hanging Flag Blocks

Dimensional Drawing
Standard Features
 Designed for breaking strength of wire with 95o wrap on sheave
 Nylatron sheaves are ideal for use with wire rope, electro-mechanical or fiber optic cables
 Sealed grease lubricated Timken tapered roller bearings
 Wide throat allows for passage of wire end fittings and connectors
 Counterweighted for smooth operation
 Replaceable sheave rim segments for different wire sizes

Optional Features
 Steel sheaves            Other sizes available
 Load monitoring system
 Paint to your specification
 Third party certification
Model
No.
Max Wire Size Wire
Breaking

Strength
(lbs)
Sheave Tread Dia (All measurements in inches unless otherwise noted) Weight (lbs)
A B C D E
420 3/8 14,800 19 5/8 54 3/4 20 35 1/2 14 7/8 1/2 1725
448 3/4 57,000 47 1/4 78 25 71 3/4 23 1/8 1/2 3025
Model
No.
Max Wire Size Wire
Breaking

Strength
(kN)
Sheave Tread Dia (All measurements in MM unless otherwise noted) Weight (Kg)
A B C D E
420 19 66 498 1391 508 902 378 140 782
448 25 254 1200 1981 635 1822 587 140 1372