Defining what constitutes a “bad day” and an acceptable weather window at each stage of construction requires a great deal of planning between contractors and developers, which might not otherwise take place, he explains.

Factors that need to be taken into account include wave height, wind speed, the time it takes to perform an operation, the time of year, the abilities of specific vessels, the distance and route between the onshore base and the offshore site, the seabed depth and topography at both locations and the sequence of works.

“If