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Bold Tern

Heavy Maintenance and Construction

4C Offshore | Bold Tern
Gusto MCS designed the Bold Tern with customisation by Fred. Olsen Windcarrier. Initially the vessel had a 800 ton crane which was also designed by Gusto MSC, as well as continuous type jacking systems. The vessel has DP2-class type dynamic positioning system and is fitted with a Voith Schneider propulsion system.

Bold Tern had a typical carrying capacity of 8 x 3.6 MW or 4 x 6.0 MW turbines or three jacket foundations suitable for 40m water depth but following upgrading in 2016, this was increased to four complete ‘multi MW’ turbines with full towers throughout the year in water depths of up to 55m – up to 60m in the summer.

A further upgrade in 2021/22 increased the lift capacity to 1,600 tons
and capable of installing foundations up to 1,500 tons and handling all known next generation turbines:
3 x SG 14-222DD
4 x SG 11.0-200DD
5 x SG 8.0-167DD
5 x MHI Vestas V164/174
3 x GE Haliade-X 12MW

To enable direct transfer of personnel to a turbine, Bold Tern has a gangway which can be deployed.


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General Information
Bold Tern
Other Names
Windcarrier 2
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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 Wind Speed

Vessel Identification
Call Sign
IMO Number

Dynamic Positioning (DP) Class

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

Operator Website
Vessel Spec.