7.1 Crane Types
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Cargo Handling Crane Types
A number of different types of cranes are found on merchant ships, each designed to handle specific cargo and operational requirements :
Manifold Cranes
- Primarily used on tankers to handle hoses and pipes during loading and discharging operations.
- Designed to withstand the harsh marine environment and the weight of heavy hoses.
- Often hydraulically powered, offering precise control over hose movements.
Slewing Cranes
- Highly versatile cranes capable of rotating 360 degrees.
- Used for a wide range of cargo handling tasks, including general cargo, containers, and bulk materials.
- Commonly found on multipurpose vessels and general cargo ships.
- Can be hydraulically or electrically powered.
Bulk Cranes
- Specialized cranes designed to handle bulk cargo, such as grains, coal, and ore.
- Typically large and powerful, capable of lifting heavy loads at high speeds.
- Often equipped with grabbers or clamshell buckets to efficiently load and unload bulk materials.
- Common on bulk carriers.
Heavy Lift Cranes
- Extremely powerful cranes capable of lifting heavy and oversized cargo.
- Used for specialized tasks, such as transporting heavy machinery, construction equipment, and large project cargo.
- Often installed on specialized heavy lift vessels or can be temporarily installed on other ships.
- Require advanced engineering and precise operation.
- Large, overhead cranes that run on tracks along the quayside or on the ship's deck.
- Primarily used in container terminals to efficiently load and unload containers onto and from ships.
- Can be shore-based or ship-mounted.
- Offer high lifting capacities and rapid transfer rates.
Portal Cranes
- Similar to gantry cranes but with a single, rigid frame.
- Often used in shipyards for lifting heavy components, such as engine blocks and propeller shafts.
- Can also be used in container terminals, especially in smaller ports.
- Highly mobile cranes mounted on rubber tires or crawler tracks.
- Used for a variety of tasks, including container handling, general cargo, and bulk cargo.
- Offer flexibility and can be easily moved around the port area.
Floating Cranes
- Large cranes mounted on barges or ships.
- Used for heavy lift operations, such as installing offshore platforms and lifting large sections of ships.
- Highly versatile and can be deployed in various water depths.
- Powerful cranes located on the shore, used to transfer containers between the ship and the quayside.
- Essential for efficient container handling in large ports.
- Offer high lifting capacities and rapid transfer rates.
Last modified: Monday, 18 November 2024, 10:29 AM