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2. Copper sheathing - Wikipedia

   en.wikipedia.org/wiki/Copper_sheathing

   Copper sheathing. Copper sheathing is a method for protecting the hull of a wooden vessel from attack by shipworm, barnacles and other marine growth through the use of copper plates affixed to the surface of the hull, below the waterline. It was pioneered and developed by the Royal Navy during the 18th century.

3. Dry dock - Wikipedia

   en.wikipedia.org/wiki/Dry_dock

   Dry dock. A dry dock (sometimes drydock or dry-dock) is a narrow basin or vessel that can be flooded to allow a load to be floated in, then drained to allow that load to come to rest on a dry platform. Dry docks are used for the construction, maintenance, and repair of ships, boats, and other watercraft.

4. Careening - Wikipedia

   en.wikipedia.org/wiki/Careening

   Careening (also known as "heaving down") is a method of gaining access to the hull of a sailing vessel without the use of a dry dock. It is used for cleaning or repairing the hull. Before ship's hulls were protected from marine growth by fastening copper sheets over the surface of the hull, fouling by this growth would seriously affect the ...

5. Folding table - Wikipedia

   en.wikipedia.org/wiki/Folding_table

   Folding table. General use Folding Table. A folding table is a type of folding furniture, a table with legs that fold up against the table top. This is intended to make storage more convenient and to make the table more portable. Many folding tables are made of lightweight materials to further increase portability.

6. Clinker (boat building) - Wikipedia

   en.wikipedia.org/wiki/Clinker_(boat_building)

   A Viking longship, displaying the overlapping planks that characterize clinker construction. Clinker -built (also known as lapstrake) [1][2] is a method of boat building in which the edges of hull planks overlap each other. Where necessary in larger craft, shorter planks can be joined end to end, creating a longer strake or hull plank.

7. Self-cleaning surfaces - Wikipedia

   en.wikipedia.org/wiki/Self-cleaning_surfaces

   A) A superhydrophobic surface with a high contact angle nearing 180 degrees. B) A surface with a low water sliding angle. C) A surface with a higher sliding angle which will be less efficient when self-cleaning water from its surface. Control over surface wettability is a critical aspect of self-cleaning surfaces.