Offshore Operations with Cranes

supported by

BMWi -  Federal Ministry for Economic Affairs and Energy


Mareval AG, HeavyLift@Sea GmbH, TUHH


01.04.2013 - 31.03.2016

About 2000 wind turbines per year shall be installed and commissioned in the German North Sea by the year 2020. The construction of these facilities place special demands on the installation vessels. In order to address the specific aspects of crane operations in the offshore wind market, we develop a software tool for the design of crane ships, planning, and safety analysis of offshore crane operations. The tool is integrated in the ship design platform E4. By using this optimized product development tool, engineering offices and shipyards from Germany will be able to configure, develop and build innovative heavy-lift vessels and crane ships. Within the research project we develop numerical tools and methods which will enable the assessment of complex crane operations at sea under adverse environmental conditions. There is a lack of essential design principles for these vessel, because the successful planning of crane operations is a key element in the offshore segment. These fundamentals can be created using the developed methods, and thus it is possible to be able to include these aspects in the design of vessels. click here for further information.

For more detailed information please get in touch with one of the contact persons: Hannes Hatecke, Adele Lübcke


The following publications have been written during the research project:

Title: A Fast Sea-keeping Simulation Method for Heavy-lift Operations Based on Multi-body System Dynamics.
Written by: Hannes Hatecke, Hendrik Vorhölter, Stefan Krüger, Jakob Christiansen
in: <em>OMAE, San Francisco, USA</em>. (2014).
Volume: Number:
on pages:
how published:


Note: HOOK

Abstract: This paper presents a fast numerical method to analyze heavy-lift operations of ships in short crested waves. For this purpose, a sea-keeping simulation method for the coupled motions of a heavy-lift vessel and a freely suspended load is developed. The method considers the motions of the ship in six degrees-of-freedom and the suspended load as a point mass. The coupling of the multi-rigid-body system of the ship and the suspended load is considered by solving the equation of roll motion together with the Euler-Lagrange equations of the load. This approach allows the simulation of several hours of real time motion in short crested waves within only a few seconds. Consequently, the method is particularly suitable when very long or numerous sea-keeping simulations or statistical results are required. Moreover, the method is applied to evaluate the sea-keeping capabilities of a heavy-lift vessel during a lifting operation conducted offshore in 2013.