Marine Warranty Surveyors

LOC act as Marine Surveyors on behalf of underwriters, or for self-insured clients

A Marine Warranty Surveyor (MWS) provides independent third-party review and approval of high value and/or high risk marine construction and transportation projects, from the planning to the execution stages.

LOC acts as a Marine Warranty Surveyor either on behalf of underwriters and their assureds, or for self-insured clients. Our marine surveyors have experience in every possible marine environment – including deepwater projects at depths approaching 3000m. From single voyage approvals right through to major offshore energy projects, our marine surveyors have the knowledge to ensure that risks are minimised.

To help our clients understand Marine Warranty Survey (MWS) requirements, we have our own Guidelines for Marine Operations. We use web-based technology to manage multi-site projects, which our clients can access to keep track of progress. Through our international network of offices, our marine surveyors can work with you wherever your project is based.


Removal and transport to land of decommissioned offshore oil platforms.

Steel jackets, GBS (gravity base structures), decks and topsides modules.

Semi-submersibles, tension leg platforms, spars, FPSOs and FSOs (Floating Production Storage and Offloading and Floating Storage Offloading), mooring systems, topsides modules, production, injection and expert risers and umbilicals.

Dry transports and wet tows of prefabricated structures, for example breakwater or pier caissons, bridge piers and deck sections and tunnel sections.

Our marine surveyors have past experience with Jack-up and semi-submersible rig location moves.

We have worked with the industry to develop Warranty guidelines tailored to offshore wind farm construction...

Rigid and flexible pipelines and risers, pipe-in pipe, pipe bundles, tie-ins, landfalls, communications and control cables.

Marine transportation of pre-assembled modules, towers, vessels, structures and equipment.

Manifold, wellheads, flowlines and umbilicals, termination and end sleds and assemblies, jumpers and flying leads, subsea equipment modules.

Including floating dry docks, power generation barges, floating casinos, portainer cranes, damaged ships, and vessels on scrap voyages.