Proven lifting performance for demanding marine work
HIAB continuous slewing marine cranes are built for on-deck, dockside and service applications where reach, strength and smooth operation are critical.
Designed for larger vessels and heavier marine lifting requirements, the range offers continuous slewing performance, strong lifting capacity and hydraulic reach across a wide working area. These cranes are well suited to vessel support, material handling, recovery work, fishing applications and specialist marine operations.
HIAB marine cranes are recognised for robust construction, reliability and the ability to be configured for demanding marine and sea applications.
Made for bigger lifts at sea
When the work gets heavier, your crane needs to keep up. HIAB continuous slewing marine cranes are designed for operations that need greater lifting capacity, longer reach and smooth rotation around the vessel.
The knuckle boom design gives operators excellent freedom of movement and precise load handling, while still folding into a compact storage position when the job is done. HIAB’s marine crane brochure also notes that the knuckle boom principle provides strong lifting capacity, extra capacity at reduced reach, precise load handling and optional overload protection.
Ideal for:
Workboats and larger commercial vessels
Coast guard and supply vessels
Tugs, barges and dredgers
Research boats and service vessels
Fishing vessels and marine handling operations
Oil platforms and specialist offshore applications
Dockyards and marine support operations
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Continuous 360° Slewing
The continuous slewing system rotates through a full 360° arc with no stop points, giving the operator an unrestricted working arc around the vessel.
For cargo handling on larger vessels where loads need to move across the full deck or from vessel to dock and back, that freedom of movement is the difference between a practical working setup and a constrained one. -
Higher lifting capacity
The continuous slewing range covers the larger HIAB marine crane models, from the 301 through to the 501 family, stepping up to the heavier lifting work that smaller cranes cannot handle.
When the vessel is larger and the cargo demands more, this is the range built for it. -
Long Hydraulic Reach
Multiple configuration options across the range give the operator significant hydraulic reach, with the ability to work well out from the crane base, across the deck, to the dock, or over the vessel side.
The right configuration matches the specific reach requirement of the application without overspecifying the crane. -
Built for Marine Conditions
HIAB marine cranes are built with stainless steel components, corrosion-resistant fittings, hot-dip galvanised extension booms, and a heavy-coat marine paint system to protect the crane against salt, spray, and the daily demands of working on water.
The result is a crane that holds its integrity through years of hard marine service, not just the first season. -
Configured for Your Vessel
The right continuous slewing crane depends on more than lifting capacity alone. TRT works with the operator to match the model, configuration, and specification to the vessel layout, reach requirements, and working conditions, so the crane fits the job from day one.
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Backed by TRT Support
TRT's support for HIAB marine cranes runs from initial selection through installation, parts supply, servicing, and ongoing technical advice.
For a vessel operator, that means one team who knows the crane and knows the application, available for the working life of the equipment.
Built for durability
HIAB marine cranes are built with the marine environment in mind. Protective finishes, stainless steel components, hot dip galvanised boom sections and robust hydraulic cylinder treatments help reduce corrosion and protect critical parts from salt, spray and hard daily use.
An oil bath type slewing system supports easier maintenance and long service life, while strength calculations can be carried out in accordance with EN 13001. The result is a durable marine crane designed to keep working in demanding on-deck, dockside and service applications.
- Key durability features include:
SA 2.5 shot blasting before primer for a high-quality paint finish
Stainless steel pipes, hoses, pipe fittings and bolts in key areas
Hot dip galvanising on extension booms and outer boom beams
Double chrome treatment and special seals on hydraulic cylinders
Marine paint system with primer, middle and final coats
Oil bath type slewing system for easier maintenance and long service life
Strength calculation in accordance with EN 13001
Capability for larger marine lifting tasks
Five model families cover 30 to 50 tonne-metres of lifting capacity with hydraulic reach from 8.1 to 17.4 metres, matching the demands of larger and more capable marine vessels.
Full 360° continuous slewing with no stop points and rated capacity maintained at up to 7 degrees of vessel heel.
Load charts for each model family are available to download.
Bring Us the Lift. We’ll Help Solve It.
TRT knows HIAB cranes, marine applications and the conditions they work in.
Tell us what you need to move, and we’ll help point you to the right model.
Watch HIAB Marine Cranes at Work
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See how HIAB marine cranes perform in real marine environments, from on-deck handling to dockside lifting and vessel support.
Marine Cranes, On the Job
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Frequently Asked Questions
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What is a continuous slewing marine crane?
A continuous slewing marine crane is designed to rotate continuously around its slewing axis.
This makes it well suited to applications where operators need smooth movement across a wide working area on deck, dockside or around the vessel.
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What makes continuous slewing cranes better suited to larger vessels than non-continuous slewing?
Continuous slewing cranes rotate through a full 360° arc with no stop points, driven by a marine slew motor and roller bearing system.
This gives the operator an unrestricted working arc around the crane base, which becomes more important as the vessel gets larger and the cargo handling tasks more varied.
The continuous slewing range also carries higher lifting capacity and longer reach than the non-continuous range, making it the right specification for vessels and operations that exceed what the smaller range can deliver.
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Can these cranes operate when the vessel is listing or heeled?
Yes. The slewing system on the continuous slewing range is rated to maintain full lifting capacity at up to 7 degrees of vessel heel.
For supply vessels, tugs, and offshore platforms where sea conditions change and the vessel is rarely sitting flat, that rating keeps the crane working through variable conditions.
Confirm the specific heel rating against the model load chart before specifying.
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What vessel types suit the continuous slewing range?
The continuous slewing range is suited to larger and more demanding vessel types, including supply ships, coast guard vessels, tugs, barges, dredgers, ice breakers, oil drilling platforms, research vessels, and navy applications.
If you are operating a smaller vessel with lifting requirements in the 4 to 25 tonne-metre range, the HIAB non-continuous slewing range is likely a better fit. Talk to the TRT team if you need help deciding between the two.
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What marine certifications are available for these cranes?
A wide range of international marine certifications is available upon request, including Lloyd's Register, ClassNK, ABS, RINA, DNV-GL, Bureau Veritas, and others.
The certification process is managed in cooperation with the customer and the Hiab sales team.
Talk to TRT about the certification requirements for your vessel, flag, and operating waters, and we can advise on the right pathway.
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How do I choose the right model for my vessel and operation?
The key inputs are your required lifting capacity, the working reach you need across the deck or between vessel and dock, and the physical constraints of the installation point on your vessel.
Load charts are available for all five model families to help assess capacity versus reach at your target configuration.
The TRT team can assist with model selection based on your vessel type, deck layout, and operational profile.
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What parts and service support is available in New Zealand and Australia?
Hiab operates one of the most extensive global service networks, with original spare parts and maintenance support available through authorised agents.
In New Zealand and Australia, TRT is the authorised Hiab distributor and can assist with parts supply, servicing, and technical support.
Get in touch with the TRT team for information specific to your location and the model you are running.
Resources to Keep You Moving.
Ready to Specify a Crane for Your Vessel?
Download the load charts for the model you are considering, or get in touch with the TRT team to work through the specification.
We can assist with model selection, deck configuration, and available marine certifications for vessels operating across New Zealand and Australia.