The assembly and usage of offshore wind energy plants will increase during the next years. The German government updated the Renewable Energies Act in 2009 which pushes the offshore development ahead. One German offshore wind energy park has been assembled and put into operation so far. Transport, construction and assembly underlie strong influences like weather conditions on sea as well as material availability. The presented article shows these influences and a concept in which adaptive planning and control strategies are used to keep the overall process under control.