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This document is intended to guide shipowners/operators in the planning and execution of hull preservation of their vessels while in dry-dock. The standard is not exhaustive as there are so many variables, including type of vessel, condition, expected trading pattern, location of dry-dock, and shipyard capability. This standard is not designed to be a job specification for hull preservation, but rather as an adjunct to a shipowner’s specification.
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This standard practice provides a standardized method of measuring hull roughness to enable reproducible and comparable readings from similar gauges regardless of geographical location.
One of the factors affecting a ship's performance and fuel consumption is the roughness of its foul-free underwater hull. the Condition and type of paint system used may have a major influence on hull roughness and ship performance. Hull roughness has a major impact on vessel fuel efficiency and exhaust emissions. This standard focuses on the mechanical roughness of the hull.
HISTORICAL DOCUMENT. Measuring hull roughness of vessels in dry-dock. Limited to a methodology—no interpretation presented. Hull roughness has a major impact on vessel fuel efficiency.