Fixed Length Box Boom Cylinder Luffing
Compact and powerful lifting solutions for offshore vessels and deck operations
Seacrane’s Fixed Length Box Boom Cranes with cylinder luffing are compact, robust, and engineered for efficient offshore lifting in confined spaces.
Built for marine vessels, platform decks, FPSOs, and supply barges, these pedestal-mounted cranes feature a hydraulic cylinder luffing system for smooth boom angle adjustment, combining reliable performance with simplified mechanics.
With a fixed box boom design, they deliver stable lifting capacity within a compact footprint, ideal for installations where space and height are limited.
All models are designed and manufactured in accordance with API Spec 2C and can be customized to meet your vessel or platform requirements.
Available Models
| Model | Boom Length (ft) | Max Lift (t) | |
|---|---|---|---|
| Min | Max | ||
| K12 | 20 | 50 | 10 |
| K20 | 30 | 60 | 20 |
| K30 | 30 | 80 | 30 |
| K35 | 50 | 100 | 60 |
| K45 | 60 | 100 | 80 |
| K55 | 60 | 100 | 100 |
| Model | Boom Length (m) | Max Lift (kg) | |
|---|---|---|---|
| Min | Max | ||
| R350 | 6 | 15 | 9,000 |
| R450 | 9 | 18 | 18,000 |
| R550 | 9 | 24 | 27,000 |
| R650 | 15 | 30 | 54,000 |
| R750 | 18 | 30 | 72,000 |
| R850 | 18 | 30 | 91,000 |
Need a custom spec?
Contact us for a compact crane configured to your deck or pedestal
Highlights
Fewer Moving Parts
Cylinder luffing system reduces mechanical complexity and potential failure points.
Lower Maintenance Costs
Simpler design means fewer components to service — lowering lifecycle costs.
Low Height Profile
Compact design suits platforms or vessels with limited vertical clearance.
Short Tail-Swing
Ideal for tight deck layouts and offshore vessels with restricted space.
API 2C Monogram
Meets offshore lifting safety and performance standards set by the American Petroleum Institute.
Custom-Built to Your Specification
Fully configurable to your rig layout, lift plan, and local compliance needs.
Highlights
Fewer Moving Parts
Cylinder luffing system reduces mechanical complexity and potential failure points.
Lower Maintenance Costs
Simpler design means fewer components to service — lowering lifecycle costs.
Low Height Profile
Compact design suits platforms or vessels with limited vertical clearance.
Short Tail-Swing
Ideal for tight deck layouts and offshore vessels with restricted space.
API 2C Monogram
Meets offshore lifting safety and performance standards set by the American Petroleum Institute.
Custom-Built to Your Specification
Fully configurable to your rig layout, lift plan, and local compliance needs.
Explore Other Models
Check out our Lattice Boom Wire Luffing Cranes,
engineered for precision lifting and simplified operation.
Built for performance. Backed by trust. Powered by TOS
Seacrane is a product line of TOS, a global leader in crane & heavy lifting solutions.
With decades of industry experience and operations across Asia, Africa and Middle East.
TOS delivers certified cranes, technical service, and lifecycle support backed by global standards
