Available at 38 ports

Underwater Hull Cleaning

Diver-operated hull cleaning and propeller polishing in water, with video record, without taking the vessel off her schedule.

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Fouling on the hull and propeller costs fuel every hour the vessel steams. A moderately fouled hull can add well over ten percent to consumption, which on a long ballast leg is a bigger number than the cleaning ever was.

Marine Surveys Africa cleans hulls and polishes propellers in water, alongside or at anchorage, using our own divers and equipment. The vessel keeps her schedule, and the work is recorded on video so the owner, the charterer and the class surveyor can all see what was done.

We also carry out in-water inspections and general underwater condition surveys, including anode checks, sea chest and grating clearance, rope guard inspection and propeller damage assessment.

Applies to

Bulk carriers and general cargo vessels
Tankers and product carriers
Container vessels and feeders
Offshore support and supply vessels
Tugs, barges and port craft
Vessels awaiting in-water survey in lieu of drydocking

Method

How we work

The same method at every port, so the report reads the same from one call to the next.

01
Pre-dive survey
Dive inspection of hull, propeller, rudder, sea chests and anodes, with video, before any cleaning begins.
02
Authority clearance
Diving permission obtained from the port authority and the terminal, and the vessel's own permit-to-work and lockout procedures agreed with the master.
03
Hull cleaning
Flat bottom, vertical sides and boot top cleaned with equipment matched to the coating, so the antifouling is not damaged.
04
Propeller polishing
Blades polished to restore surface finish, both faces, with the boss and rope guard cleared.
05
Report and video
Written report with before and after video, suitable for submission to owners, charterers, class or underwriters.

Ports we cover