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2. Fender (boating) - Wikipedia

   en.wikipedia.org/wiki/Fender_(boating)

   In boating, a fender is an air-filled ball or a device in other shape and material used to absorb the kinetic energy of a boat or vessel berthing against a jetty, quay wall or other vessel. [1] Fenders, used on all types of vessels, from cargo ships to cruise ships, ferries and personal yachts, prevent

3. Treenail - Wikipedia

   en.wikipedia.org/wiki/Treenail

   A treenail, also trenail, trennel, or trunnel, is a wooden peg, pin, or dowel used to fasten pieces of wood together, especially in timber frames, covered bridges, wooden shipbuilding and boat building. [1] It is driven into a hole bored through two (or more) pieces of structural wood (mortise and tenon).

4. Phoenician joint - Wikipedia

   en.wikipedia.org/wiki/Phoenician_joint

   A Phoenician joint (Latin: coagmenta punicana) is a locked mortise and tenon wood joinery technique used in shipbuilding to fasten watercraft hulls.The locked (or pegged) mortise and tenon technique consists of cutting a mortise, or socket, into the edges of two planks and fastening them together with a rectangular wooden knob.

5. Ballard Locks - Wikipedia

   en.wikipedia.org/wiki/Ballard_Locks

   The Chittenden Locks shortly after their construction. The Carl P. English Gardens had not yet been started. The inset shows the nearby Fishermen's Terminal. The complex includes two locks. [2]: 8 Using the small lock when boat traffic is low conserves fresh water during summer, when the lakes receive less inflow. Having two locks also allows ...

6. Rowlock - Wikipedia

   en.wikipedia.org/wiki/Rowlock

   A rowlock cut into the top strake of a boat. In some, largely older, strict terminologies, a rowlock is a U-shaped cut-out in the top strake of a boat (usually the wash-strake). In older texts, the U-shaped metal fitting may be called an "oar crutch", a usage which is largely obsolete. [4]: 213–217 [5]

7. Lock (water navigation) - Wikipedia

   en.wikipedia.org/wiki/Lock_(water_navigation)

   The boat enters the lock. 8–9. The boat enters the lock. 3. The lower gates are closed. 10. The upper gates are closed. 4–5. The lock is filled with water from upstream. 11–12. The lock is emptied by draining its water downstream. 6. The upper gates are opened. 13. The lower gates are opened. 7. The boat exits the lock. 14. The boat exits ...