Maintenance below the waterline
Humphree has endorsed Propspeed Foulfree Multi-Surface for its stabiliser fins and interceptors. The partnership concerns antifouling-related maintenance on moving marine components.
Owners of 12.00–23.99-metre yachts may have smaller stabilisation systems than superyachts, so the correct coating depends on the exact hardware. A partnership statement is not approval for an unrelated brand of fin.
How the coating is intended to work
Foulfree is described by the supplier as a biocide-free foul-release treatment. The companies want to limit marine growth on the surfaces that help control a vessel’s movement.
Marine growth varies with local water conditions, operating hours and time between lifts. No uniform speed gain or fuel saving should be inferred from the announcement.
Plan the yard job carefully
An owner preparing a haul-out should ask the stabiliser manufacturer and applicator to agree on cleaning, masking, surface preparation and curing. Sensitive fittings require attention before the yacht returns to service.
A coating choice should be made alongside the existing maintenance plan and warranty conditions. It must not prevent inspection or interfere with the system’s moving parts.
What the announcement establishes
The agreement links Humphree’s stabilisation experience with Propspeed’s underwater coating product. The original supplier release and its specific photograph document the arrangement.
The practical takeaway is to check compatibility and workmanship for the particular yacht. Luxury Yacht Guide does not present the companies’ general efficiency claims as independently measured results.



