4C Offshore Empowering Intelligence

Blue Tern

Heavy Maintenance and Construction

4C Offshore | Blue Tern
Heavy lift jack-up vessel Blue Tern was built under a 75/25 joint venture company formed by Keppel FELS and the Seafox Group.

Blue Tern (previously Seafox 5) is a multi-purpose, four-legged and self-propelled DP2 jack-up offshore wind turbine construction vessel, designed to operate throughout the year in harsh offshore conditions and in water depths of up to 65 metres.

Blue Tern features a 1,200 ton main crane and a 7,000 ton variable deck load carrying capacity. With an overall length of 151 meters and a breadth of 50m, the vessel can accommodate up to 150 personnel.


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General Information
Blue Tern
Other Names
Seafox 5
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Vessel Category
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Vessel Classification
Has Heli Deck?

Build Information
Construction Country
Year Last Converted

Main Characteristics
Length Overall (LOA)
Minimum Draft
Maximum Draft

Transit Speed
Maximum Speed

Cargo Deck
Free Deck Space
Max. Deck Load

Max Jacking Speed
Num legs
Leg length

Design Criteria
Max Operable Significant Wave Height
Max. Operable Tide Current
Max. Operable Wind Speed

Vessel Identification
Call Sign
IMO Number

Dynamic Positioning (DP) Class
DP Notes

First Crane Capacity
First Crane Radius
First Crane Description
Second Crane Capacity
Second Crane Radius
Second Crane Description
Max. Lifting Capacity

Operator Website
Vessel Spec.