antifouling paint

noun

, Nautical.

1. paint applied to the portion of a hull below the waterline to poison or discourage marine animals and plants that would otherwise cling to it.

Word History and Origins

Origin of antifouling paint¹

First recorded in 1865–70

Example Sentences

He said he’s had to start coating the bottom of his river boats with antifouling paint to prevent barnacles and other marine organisms from growing amid saltwater intrusion.

From Washington Post

To keep barnacles off hulls, boats are coated in antifouling paint that kills barnacle larvae.

From New York Times

Her underwater hull is treated annually with antifouling paint to prevent barnacles and she is re-varnished every few weeks.

From BBC

Her antifouling paint was clean, and her lines beneath the swell of quarter and bows were fine.

From Project Gutenberg