SEA-1250 Jackup Boat Crane

SEA-1250 Jack-up

Entry level Workhorse

  • Description Description
  • Ruler Specifications

The SEA series are multi-purpose jack-up barges, used for civil construction works. They are specifically designed and built to operate in moderate and harsh environments.

The SEA-1250 is intended for use in water depth up to 30 m in a benign environment and has a leg length under the hull of 52 m. These units are characterized by optimized variable load, deck area, and flexibility for adding all types of mission equipment.

The SEA-1250 is ideally suited for Civil construction works on for example jetties, quay walls or other near-shore works in shallow water areas.


  • Safe, solid and stable platform
  • Designed for survival
  • Robust & positive engagement jacking system
  • Easy controls for fast jacking onsite
  • High number of jacking moves
  • Large free deck space
  • Built-in redundancy

The SEA series can be fully customized to owner’s specific requirements


Main characteristics

Hull length

46.5 m

Hull width 30.3 m
Free deck space up to 1,000 m2
Overall leg length 65.0 m
Leg length under hull (max.) ± 52 m
Variable load (max.) up to 1,200 t
Water depth 30.0 m
Accommodation up to 5 PoB
Main crane 300 t at 18 m

SEA-1250 Offshore Windmill installation
SEA-1250 Offshore Wind Turbine Installation
SEA-1250 Jackup Boat Shipyard
SEA-1250 Jack-up in Shipyard
Sea Installer Challenger at Borssele offshore wind farm

Our designs at work

Ideas may start on paper, but our designs are brought to life each day as they serve the marine and offshore industries. View our reference list of field-proven designs and vessels.

View our reference list

Related Products