Is a fixed floating crane worth choosing?

A fixed floating crane (a floating crane fixed in a specific water area via a mooring system) owes its core value to fixed-point efficiency + scenario adaptability. Especially for scenarios with fixed operation needs such as docks and power stations, its advantages are concentrated in three aspects:

• Strong Operational Stability: Fixed by multiple sets of anchor chains or pile foundations, it is not affected by water flow or tides. The operation accuracy can reach ±5cm, which is much higher than that of mobile offshore cranes (over ±15cm). It is suitable for scenarios requiring high accuracy, such as container loading/unloading at docks and equipment hoisting in power stations.

• Flexible Load-Bearing Capacity: The lifting capacity can be customized from 50t to 2000t, and the length of the boom is adjustable (15-60 meters). It can not only meet the bulk transfer of bulk cargo (coal, ore) at docks but also cope with the hoisting needs of large equipment in power stations, such as boilers and generator stators (with a single weight usually ranging from 300t to 800t).

• Controllable Operating Costs: No frequent displacement and debugging are required, resulting in a low equipment depreciation rate (service life can reach 20-25 years, 5-8 years longer than that of mobile floating cranes). In addition, it can be equipped with fixed material conveying pipelines and power supply systems, reducing the investment in auxiliary equipment for docks/power stations. The long-term operating cost is 15%-20% lower than that of mobile Cargo transfer cranes.

II. Practical Adaptability Analysis in Dock Scenarios

1. Suitable Scenarios (Situations Worth Choosing)

• Dedicated Berth Operations: Such as container-specific docks and fixed bulk cargo unloading berths, where long-term loading/unloading operations are required in the same water area. Fixed offshore crane can be directly connected to dock conveyors and stockyards to achieve seamless "ship-crane-yard" transfer. The efficiency is 10%-15% higher than that of quay cranes (no need to wait for quay crane displacement).

• Docks in Complex Water Areas: In docks with rapid water flow or large tidal ranges, such as river estuaries and offshore areas, the mooring system of fixed offshore cranes can resist 3-5 level winds and waves. The operation interruption rate is more than 25% lower than that of mobile floating cranes, ensuring all-weather operations.

2. Unsuitable Scenarios (Situations Requiring Caution)

• Flexible Scheduling Across Multiple Berths: If a dock has multiple scattered berths and needs to switch operations between different berths frequently, disassembling anchor chains and dispatching tugboats are required for the displacement of fixed floating cranes, which takes 4-6 hours for a single displacement. The efficiency is much lower than that of mobile floating cranes (displacement within 30 minutes).

• Temporary Emergency Operations: For example, if a sudden equipment failure occurs at the dock and temporary hoisting and maintenance are needed, fixed transfer cranes cannot respond quickly. Renting mobile floating cranes is more suitable in such cases.

III. Practical Adaptability Analysis in Power Station Scenarios

1. Suitable Scenarios (Situations Worth Choosing)

• Equipment Hoisting at Power Station Docks: For the unloading of fuels (coal, heavy oil) in thermal power stations and hydropower stations, as well as the installation/maintenance of large equipment (steam turbines, transformers), the operation points are fixed (mostly dedicated docks for power stations). The large lifting capacity (over 300t) and high accuracy of fixed transfer cranes can meet the needs, and no frequent position adjustment is required.
• Long-Term Fuel Transfer: If a power station needs to transfer fuel from cargo ships to stockyards all year round, fixed floating cranes can be equipped with fixed conveyor belts to realize integrated "hoisting-conveying". Compared with mobile marine cranes, it reduces material loss by 30% (avoiding material spilling during displacement).

2. Unsuitable Scenarios (Situations Requiring Caution)

• Small-Scale Power Stations or Temporary Projects: For small-scale power stations with an installed capacity of less than 300,000 kW, the annual fuel demand is low. The initial investment of fixed offshore cranes (about 5-20 million RMB) is too high, and the cost-effectiveness is lower than that of renting mobile floating cranes (single rental cost: 20,000-50,000 RMB/day).

• Restricted Water Area Conditions: If the water depth at the power station dock is insufficient (less than 8 meters) or the seabed is soft mud geology, the mooring system of fixed marine cranes cannot be fixed stably, which may cause tilting risks. Therefore, it is not recommended to use fixed floating cranes in such cases.

IV. Selection Summary: Is a Fixed Floating Crane Worth Choosing?

• Priority Selection Situations: Docks (dedicated berths, complex water areas, long-term fixed operations) and power stations (dedicated docks for large-scale power stations, long-term fuel transfer/equipment hoisting) with sufficient budgets and operation cycles exceeding 5 years. In these cases, fixed deck cranes can give full play to their advantages of "stability, high efficiency, and low cost".

• Alternative Suggestion: If high operational flexibility is required, the operation cycle is short (less than 3 years), or the water area/berth conditions are restricted, a mobile marine crane + temporary mooring device can be selected. This combination balances flexibility and stability, and the initial investment is 40%-60% lower than that of fixed marine cranes.

 

Our factory & equipment