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2. Bridge protection systems - Wikipedia

   en.wikipedia.org/wiki/Bridge_protection_systems

   Pile-supported fender system on the James P. Houlihan Memorial Bridge. Fender systems attached to the pier with the goal to absorb the vessel impact. Their ability to withstand a typical ship collision is low. Fenders are built using a variety of materials: [8] thin-walled concrete box; thin-walled steel membrane steel; rubber.

3. Caisson (lock gate) - Wikipedia

   en.wikipedia.org/wiki/Caisson_(lock_gate)

   Ship caisson at Droogdok Jan Blanken at Hellevoetsluis. A caisson is a form of lock gate.It consists of a large floating iron or steel box. This can be flooded to seat the caisson in the opening of the dock to close it, or pumped dry to float it and allow it to be towed clear of the dock.

4. Treenail - Wikipedia

   en.wikipedia.org/wiki/Treenail

   The one in the front has been used and pulled out, showing the way forces have permanently deformed the wood. 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 ]

5. 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 ...

6. Glossary of nautical terms (M–Z) - Wikipedia

   en.wikipedia.org/wiki/Glossary_of_nautical_terms...

   A type of boat designed specifically to fit the narrow canal locks of the United Kingdom. narrows A narrow part of a navigable waterway. nautical Of or pertaining to sailors, seamanship, or navigation; maritime. nautical chart A map of a sea or ocean area and adjacent coastal regions, intended specifically for navigation at sea.

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   www.aol.com/games

   Discover the best free online games at AOL.com - Play board, card, casino, puzzle and many more online games while chatting with others in real-time.