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A marine deck crane, also widely known as a ship crane, marine crane, or deck crane, is a specialized heavy-duty lifting machine designed exclusively for shipboard and offshore applications. It is typically installed on cargo ships, bulk carriers, offshore platforms, workboats, and fishing vessels to perform loading, unloading, hoisting, and transferring of goods, equipment, provisions, and materials. Driven by either hydraulic or electric systems, it supports stable 360° continuous rotation and safe load handling in marine environments. Built with anti-corrosion, waterproof, and salt‑spray resistant materials, it ensures reliable performance under harsh sea conditions, making it essential equipment for modern shipping and offshore engineering.
Classification
By Boom Structure
Straight boom marine crane
Knuckle boom marine crane (foldable, space‑saving)
Telescopic boom marine crane
By Driving Mode
Hydraulic marine deck crane
Electric marine deck crane
Electro-hydraulic marine crane
By Installation Type
Fixed pedestal marine crane
Portable deck crane
Custom bolted marine crane
By Lifting Capacity
Light-duty: 1t – 10t
Medium-duty: 10t – 50t
Heavy-duty: 50t – 300t and above
Main Applications
Cargo ships and bulk carriers for general cargo handling
Offshore platforms and support vessels for equipment lifting
Fishing boats for hoisting nets, catches, and fishing gear
Workboats and tugboats for rescue and construction assistance
Container vessels and ferries for auxiliary loading operations
Yacht and special vessels for small equipment maintenance
Most marine deck cranes use an electro-hydraulic driving system. The electric motor drives a hydraulic pump to generate high-pressure oil flow, which powers hydraulic motors and cylinders to complete lifting, luffing, telescoping, and slewing movements.
The hoisting mechanism drives the winch to lift or lower the load through a steel wire rope.
The luffing cylinder adjusts the boom angle to change the working radius.
The slewing motor drives the slewing bearing to achieve 360° rotation.
The control system uses a manual valve group or an electric proportional control to ensure smooth and precise operation.
Safety devices such as limit switches, overload protection, and pressure relief valves automatically prevent dangerous operation.
360° full-circle rotation for flexible and omnidirectional operation.
High corrosion resistance with marine-grade paint and galvanized components.
Strong seawater adaptability, waterproof, and salt‑fog resistant design.
Compact structure, suitable for limited deck space.
Stable and safe operation with multiple safety protections.
Easy installation and maintenance, suitable for long‑term marine use.
Customizable design for different vessel types and tonnage requirements.
Smooth control, low noise, and high working efficiency.
| Parameter | Specification Range |
|---|---|
| Rated Lifting Capacity | 1t, 3t, 5t, 8t, 10t, 16t, 20t, 25t, 30t, 50t |
| Working Radius | 3m – 20m |
| Lifting Height | 5m – 30m |
| Slewing Angle | 360° continuous rotation |
| Slewing Speed | 0.3 – 1.2 r/min |
| Hoisting Speed | 3 – 15 m/min |
| Power Supply | 380V / 440V 50/60Hz or diesel-hydraulic |
| Protection Grade | IP56 – IP67 |
| Material | Marine-grade steel, anti-corrosion treatment |
| Working Environment | -20℃ ~ +60℃, suitable for salt spray and humidity |
Custom parameters, including boom length, lifting capacity, remote control, and explosion‑proof design, are available upon request.
