Offshore Cranes: 6 Things You Need to Know

When we envision offshore cranes, their remarkable capabilities at sea immediately come to mind. These robust machines are the bedrock of the offshore industry, efficiently handling intricate projects even in the most challenging environments.

However, did you know that there’s more to offshore cranes than meets the eye? In this article, we’ll delve into the six most intriguing questions about offshore cranes and provide comprehensive answers to each of them. Get ready to uncover the fascinating aspects of these powerful machines!

1. What can an offshore crane do?

Offshore cranes adapt to more complex sea conditions and are suitable for the following work:

• Offshore drilling platforms, oil platforms, supplementary living supplies, equipment and transportation of materials
• Deepwater operations such as the launch and recovery of submersibles and small yachts
• Loaded on construction vessels or semi-submersible vessels, operate in offshore environments, hoist materials and equipment
• For construction and salvage operations in ports or sheltered waters or equivalent offshore environmental conditions

2. What information is essential when purchasing an offshore crane?

When buying an offshore crane, several crucial details need to be considered to ensure a suitable and efficient solution for your specific requirements. Here’s the essential information you should provide:

1. Construction Types: Identify the preferred construction type, whether it’s bottom-supported, semi-submersible, hull application, or stationary.
2. SWL (Safe Working Load): Specify the maximum weight capacity the crane must handle, including the size and distance of the loads relative to the crane.
3. Ambient Conditions: Consider the crane’s intended application environment, such as Beaufort and Sea state levels, to ensure it can withstand the operational challenges.
4. Crane Boom Type: Determine the appropriate boom type for your needs, including options like telescopic, knuckle, knuckle & telescopic, and stiff booms.
5. Height Above Water: Provide the required height of the crane above the water level to accommodate specific lifting tasks.
6. Classification Society Certificates: Ensure compliance with necessary Classification Society certificates for safe and regulated operation.
7. Additional Accessories: Consider other accessories and features you may need, such as cab equipment, air conditioning, and the electric cabinet’s protection level.

3. What are the characteristics of cranes operating at sea?

Offshore cranes, in contrast to their land-based counterparts, must address specific challenges to ensure precise positioning and efficient transportation. Here are the distinctive characteristics of cranes working at sea:

• Controlling Swing: Offshore cranes must effectively manage the swing generated during load transportation to achieve accurate positioning and enhance transportation efficiency.
• Fixed on Moving Platforms: These cranes are installed on moving platforms, such as ships, where the platform’s motion significantly impacts the hoisting process.
• Inconsistent Motion: The movement of the load at the point of lift and drop differs from the motion of the crane itself.
• Oscillations from Waves: During operations, both the cargo ship being loaded and the receiving ship experience pitching, rolling, and heaving due to waves, leading to machine oscillations under load.
• Potential Hazards: Lifting cargo from ships that are moving up and down and swaying can lead to collisions with the deck or even cause cargo to fall off the hook, posing safety risks.
• Focus on Environmental Factors: Offshore cranes prioritize anti-corrosion, water release, and explosion-proof measures due to the harsh offshore environment.

4. What holds the title of the world’s biggest offshore crane?

The prestigious title of the world’s biggest offshore crane is still held by the SSCV Sleipnir, constructed by SembCorp Marine in Singapore back in 2019. This remarkable offshore crane vessel is currently owned and operated by the renowned Dutch offshore marine contractor, Heerema Marine Contractors.

Notably, Sleipnir boasts two towering 10,000-ton capacity cranes, granting it an impressive total lifting capacity of 20,000 tons. Continuously setting new records, this extraordinary vessel continues to excel in offshore crane operations, solidifying its position as an engineering marvel.

5. What is the salary of an offshore crane operator?

The salary of an offshore crane operator typically falls within the range of $45,000 to $80,000 per year, as indicated by various job and career platforms.

It’s important to mention that operators with specialized training, certifications, and relevant courses often command higher compensation in this field.

6. What are the top offshore crane companies?

In 2023, the world’s top offshore crane companies are Palfinger Marine, Heila Cranes S.p.A., Liebherr Group, DMW Marine Group, Macgregor, Allied Systems, HS.MARINE, EK Marine Ltd, Appleton Marine and North Pacific Crane Company, etc.