The 3-Ton Offshore Knuckle Boom Crane from OUCO is engineered for efficient and precise material handling on offshore platforms, vessels, and marine support ships. Designed for use in Sea Condition Grade 4 (wave heights up to ~2 m), this crane combines compactness with robust performance, making it ideal for load transfers, supply handling, and subsea operations in demanding ocean environments.
Key Features & Benefits:
With a Safe Working Load (SWL) of 3 tons, and an adjustable working radius spanning approximately 2.5 m to 15 m, this crane works well within compact deck zones while covering sufficient outreach for general offshore lifting.
The crane delivers hoisting speeds of 18–20 m/min and hook travel up to 25 m, enabling rapid cargo transfers. With 360° continuous slewing at 0.8–1.0 r/min, it provides full rotational flexibility for precise load positioning.
The knuckle boom architecture enables the jib to fold inward, reducing deck footprint and minimizing pendulum motion when engaging loads. This design enhances compact stowage and improves safety when working near vessel structures.
Engineered for Sea State 4, the crane maintains stable operation under dynamic sea motion, with oil-filled cylinders, corrosion-resistant coatings, and sealed hydraulic circuits that resist saltwater intrusion and environmental wear.
Equipped with hydraulic safety valves, overload protection, and emergency-stop functionality, the crane ensures operator safety in critical conditions. Control options include radio remote control and onboard console stations for flexible operation.
Product Pictures
Parameters
| No. | Parameter Category | Specification |
| 1 | Safe Working Load (SWL) (See Loadchart) | 3t |
| 2 | Max. Working Radius | 15m |
| 3 | Min. Working Radius | ~2.5m |
| 4 | Hoisting Speed | 18~20m/min |
| 5 | Hoisting Travel | 25m |
| 6 | Slewing Speed | 0~0.5r/min |
| 7 | Slewing Sector | 360° |
| 8 | Average Luffing Time | ~90s |
| 9 | Max. Heel/Trim | 8°/4° |
| 10 | Working Wind Speed | ≤20m/s |
| Stowing Wind Speed | ≤55m/s |
| Max. Roll/Pitch (Stowing) | 30°/8° |
| 11 | Motor | 22kW |
| Power Supply | 440V / 60Hz / 3Ph |
| Duty Cycle | S1 / IP56 / F |
| 12 | Ambient Temperature | -10℃~+50℃ |
| 13 | Crane Model | Offshore Crane |
| 14 | Deck Load - Max. Capsizing Moment | 1400 kN·m |
| Deck Load - Max. Turning Moment | 260 kN·m |
| Deck Load - Max. Vertical Force | 170 kN |
| Deck Load - Dead Weight | ~11t |
| Deck Load - Overall Dimensions (L×W×H) | 16000×2500×5200 |
| 15 | Area Classification | Safe Area |
| 16 | Sea Condition | Grade 4 |
GA Drawing
Company Overview
Founded in 1984, OUCO INDUSTRY is a leading manufacturer and supplier of high-quality marine equipment, specializing in cranes, lifting systems, and material handling solutions. With over 40 years of experience, we are known for delivering innovative and reliable products that meet the specific needs of the maritime industry. Our products are trusted by clients worldwide, including those in the luxury yacht, offshore, port, and industrial sectors.
Located in Jiangsu Province, China, our state-of-the-art manufacturing facility spans 48,000 square meters and is equipped with advanced machinery and a team of over 150 skilled professionals. We are committed to ensuring that every product we deliver is engineered to the highest standards of quality, performance, and safety.
