O+M involves supporting the ongoing operation of the wind farm through scheduled and unscheduled maintenance and servicing. It commences from construction and continues throughout the working life of the wind farm.

O+M includes: Onshore control/SOV room providing 24/365 operational support, insurance, O&M ports, monitoring, inspection, repair, transport of crew and equipment to site (CTV/helicopter).

Relative geographic proximity is often cited as the reason that local region can expect economic benefits from offshore industry (Modelling in the Missing Middle report indicates that c 38% of O+M could be delivered from the Celtic Sea region; with c19% from Cornwall). However, there is much uncertainty around how O+M will actually be delivered at the commercial level of floating offshore wind. It has not been done at scale before.