Optimus Pråm - Semi-submersible wind farm installation vessel for Blekinge Offshore
Rapport, 2014

In Sweden the government is investing lots of resources in order to meet the energy need with clean and renewable alternatives. Since wind is an unlimited source of energy the exploitations of wind farms is of great interest. This report describes a conceptual design of an innovative offshore wind turbine installation vessel for inland sea conditions, with highest possible energy efficiency and environmental friendly performance in every detail. The customer, Blekinge Offshore, main requirement is to receive a concept with an as low installation cost as possible. The final concept Optimus Pråm includes one installation vessel, which is a semi-submersible barge, and one support vessel that supply the installation vessel with power and propulsion. The power is distributed from the support vessel to the installation vessel through a power cable. The installation vessel will be self-propelled during the installation phase using electrical motors and thrusters. The installation vessel shall be able to handle gravity foundations and fully assembled wind turbines, transported vertically to the installation site. Foundations and windmills will be fully assembled in Karlshamn port before transit to site. During transit the installation and support vessel are connected to each other in all motions except pitch. This almost total fixed connection makes the two vessels acts like one, which gives the joint vessel excellent manoeuvrability. When installing foundations, the installation vessel and the support vessel disconnect. The installation vessel places the foundation at the planned location by ballasting until the foundation has reached the seabed. After de-ballasting the installation vessel and support vessel connects again and transit back to the harbour. When installing wind turbines the two vessels are kept connected and makes highly accurate positioning for the installation possible

Baltic Sea

Lifting appliances

Wind turbine


Push barge

Offshore installation

Offshore Wind farm


Gravity foundation


Christoffer Ahlström

Organisation okänd

Alexander Andersson

Organisation okänd

Niklas Blomgren

Organisation okänd

Dominik Büchel

Organisation okänd

Chi Chen

Organisation okänd

Lisa Dahlström

Organisation okänd

Youmin Huang

Organisation okänd

Daniel Karlsson

Organisation okänd

Surya Kiran Pervali

Organisation okänd

Kadir Burak Korkmaz

Chalmers, Sjöfart och marin teknik, Marin teknik

Adam Olsson

Organisation okänd

Matej Prevc

Organisation okänd

Jennifer Ringsby

Organisation okänd

Rioshar Yarveisy

Organisation okänd

Qiajian Ye

Organisation okänd

Nicklas Åkerlund

Organisation okänd


Hållbar utveckling






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