What marine operations are subject to marine warranty surveys?

Operations which are insured only if they meet the requirements of a Warranty Clause in the insurance policy, such as: wet and dry tows; lifting-on and lift-off of heavy lifts; offshore installations (including launching, upending, mating, piling, grouting, positioning, setting and levelling); load-outs and float-outs; sub-sea operations; and offshore wind turbine installations.