1.7T8.3M Knuckle Boom Telescopic Marine Crane
The OUCO 1.7T8.3M Knuckle Boom Telescopic Marine Crane is a versatile marine lifting solution designed to meet the complex operational demands of marine engineering and shipboard tasks.
Combining a folding arm articulated structure with a telescopic boom, this crane offers exceptional load-bearing capacity and adaptability across various working conditions. Its compact design maximizes space efficiency, making it ideal for vessels with limited deck space.
The crane’s core components include a multi-section articulated Knuckle Boom and Telescopic Boom, all powered by a fully hydraulic drive system for precise control.
Product Features
This crane's unique design significantly reduces deck space usage when not in operation—occupying up to 1/3 less space than traditional straight-arm cranes, making it especially suitable for narrow-deck vessels like tugboats and research ships.
The telescopic boom extends the crane's working radius to a maximum of 8 meters, and the simultaneous extension of both the folding and telescopic arms allows for an "S-shaped" lifting trajectory. This feature is particularly useful for complex operations such as ship-to-ship cargo transfer (STS) and underwater equipment lifting.
Additionally, the one-button expansion/contraction feature, facilitated by the hydraulic drive system, reduces setup time to within 15 minutes. The crane is equipped with dual overload protection systems (MOPS and AOPS), real-time monitoring, and an integrated control console for precise and efficient operation.
The corrosion-resistant coatings and use of EH36/EH47 high-strength steel ensure durability, while the choice of stainless steel composite steel plates for critical components enhances its longevity in harsh offshore environments.
General Arrangement

TECHNICAL SPECIFICATION |
1 | SWL | 1.7T8.3M |
2 | MAX.WORKING RADIUS | 8.3m |
3 | MIN.WORKING RADIUS | 1.5m |
4 | HOISTING SPEED | 0~12m/min |
5 | HOISTING HEIGHT | 20m |
6 | SLEWING SPEED | 1.0r/min |
7 | SLEWING ANGLE | 360° |
8 | WORKING CONDITION |
|
| TRIM | ≤2° |
| HEEL | ≤5° |
9 | DESIGN TEMPERATURE | -10°~+45° |
10 | HPU | 18.5KW |
11 | LUFFING ANGLE | 0-75° |
12 | POWER RESOURCE | AC380V/50HZ |
13 | MOTOR SPEED | 1465r/min |
14 | ELEC-MOTOR POWER | Y180M-4-H |
Product Pictures







