Boottopping

Boot·top·ping

Boottopping

n.
  1. 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. (Naut.)
  2. Sheathing a vessel with planking over felt. (Naut.)