Boottopping
Boottopping ({not transcribed}) , noun
1.
(Nautical) The act or process of daubing a vessel's bottom near the surface of the water with a mixture of tallow, sulphur, and resin, as a temporary protection against worms, after the slime, shells, etc., have been scraped off.
2.
(Nautical) Sheathing a vessel with planking over felt.