The focus of this paper is to design and develop a discrete-event simulation model of an offshore wind farm that allows the identi
fi ca-
tion of favourable operating strategies for offshore wind O&M fl
eets. The aim is to provide decision support to operators trying to manage a portfolio of wind turbines and a fl eet of vessels for the mid-term (5 years) offshore wind O&M planning. The model builds upon the existing literature by considering different climate parameters, failure characteristics of the turbine components and the operational characteristic of the transportation systems. The combination of the various O&M strategies de
fi nes a particular scenario, and the simulation model developed allows the operator to assess the different strategies and compare them in terms of generated revenue.