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Lo Underwater hull cleaning.
Underwater hull cleaning is the process of removing marine growth, algae, barnacles, slime, and other deposits from a vessel’s hull while the vessel remains afloat.
Main purposes:
Improve vessel performance: Marine growth increases friction and drag, reducing speed.
Reduce fuel consumption: A clean hull allows the vessel to move more efficiently.
Prevent corrosion and damage: Regular cleaning helps protect the hull and underwater fittings.
Maintain manoeuvrability: Propellers, rudders, thrusters, and other underwater components can be cleaned and inspected.
Meet environmental requirements: Cleaning must be carried out carefully to prevent the release of harmful organisms, coatings, or contaminants into the water.
Typical methods include underwater brushing, rotary brushes, high-pressure water cleaning, and specialised remotely operated cleaning equipment. Divers or remotely operated systems may be used depending on the vessel and port requirements.
Important considerations: Before cleaning, operators should check the hull coating, environmental regulations, port restrictions, and the condition of underwater equipment. Excessive or inappropriate cleaning can damage protective coatings and increase pollution.
In short: Underwater hull cleaning maintains a vessel’s efficiency, safety, hull condition, and environmental compliance while it remains in the water.