Semar has offered fit-for-purpose consultancy to projects expanding to the sea, no matter what industry. With the development of the offshore renewables industry, it was natural for Semar to offer its competence and experience earned in the offshore oil & gas industry to multiple wind farm projects. The completion of these projects have shown our work methods based on team collaboration and multi-discipline approach, were adaptable to the specific challenges and demands of the offshore renewables industry.


›  OHT – Hywind floating foundation transportation (3 600t) – 2017

›  Owec Tower – NGG Offshore wind farm – 2015

›  Statoil – Hywind installation study – 2015

›  Sweco – Marine operation assessment of wind turbine installation  – 2014

›  Fred Olsen – Lifting analysis Seagreen Project – 2012

›  Fred Olsen – Crane wire load analysis for upending of wind turbine foundations  – 2010

›  Statoil – Marine operation study for Hywind – 2010

›  Master Marine – Sheringham shoal wind turbine installation – 2009-2011

›  NorWind – Alpha Ventus wind farm  – pre-installation method of piles – 2008

›  Owec Tower – Alpha Ventus wind farm – Structural analysis and design – 2008

›  Fred Olsen – Concept development of installation methods – 2001-2002

Areas of competence

›  Marine operation study and consultancy

›  Mooring analyses of wind turbines

›  Installation of foundations (Monopiles and Jacket) for wind turbines and substation (Tender).

›  Marine transportation with deck arrangement study

›  Hydrodynamic analyses of operations

›  Structural design and analyses of transport structures

›  Detail design of fixed and floating substructures.

Sheringham Shoal

As a subcontractor to Master Marine, Semar was responsible for the engineering of the WTG and Substation loading, transportation and installation, comprising lifting with the two 750t cranes of the Service Jack 2 jack-up, as well as skidding of the WTG’s and nacelles on board the vessel. Semar also was responsible for the design of grillage, seafastening and skidding structures, fabrication follow-up and operational assistance.

Scope of work summary

›  Semar acting as subcontractor to Master Marine ASA for engineering of installation activities

›  Semar was responsible for the engineering of

›  WTG and substation loading

›  Transportation and installation

›  Comprising lifting with the two 750 tonnes cranes

›  Skidding of WTG’s and nacelles.

›  Structural FEA of the grillage, vessel deck and securing structures

›  Design of handling aids and outfitting

›  General assistance during fabrication

Key data

Client Master Marine
Operator Statoil
Project duration 2009 – 2011
Project characteristics Total capacity of 315 MW
Wind farm area of 35 squarekm
Water depth of 16 to 22 meters


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