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2. Caisson lock - Wikipedia

   en.wikipedia.org/wiki/Caisson_lock

   The caisson lock is a type of canal lock in which a narrowboat is floated into a sealed watertight box and raised or lowered between two different canal water levels. It was invented in the late 18th century as a solution to the problem posed by the excessive demand for water when conventional locks were used to raise and lower canal boats ...

3. Caisson (lock gate) - Wikipedia

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

   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. Graving docks at Birkenhead, closed by a variety of ship caissons and floating (sliding) caissons

4. 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 ...

5. Chelmer and Blackwater Navigation - Wikipedia

   en.wikipedia.org/wiki/Chelmer_and_Blackwater...

   They undertook major refurbishment work at the lock during the winters of 2016/17 and 2017/18, including replacement of the outer sea gate with a new design. A long-standing ambition, first proposed in 1985, has been to provide a better destination at Chelmsford, by providing access for boats to the town centre.

6. Lockrod - Wikipedia

   en.wikipedia.org/wiki/Lockrod

   Trailer doors are secured to the end frame (end wall) of the trailer to make sure the cargo doesn't shift and break down the door, and second, to keep the doors aligned properly by not allowing them to move up and down while in transit . If racking occurs due to too much play between parts, the parts wear out and eventually will fail to secure ...

7. Locks and weirs on the River Thames - Wikipedia

   en.wikipedia.org/wiki/Locks_and_weirs_on_the...

   Penton Hook Lock with City of London arms on the House. The green box is the hydraulic control system Goring Lock demonstrates the common juxtaposition of weir, lock island, lock keeper's house and lock Choice of Yellow and Red warning boards which are placed on lock gates when navigation is hazardous Kayaker at Boulter's Weir

8. News, Politics, Sports, Mail & Latest Headlines - AOL.com

   homepage.aol.com

   Discover the latest breaking news in the U.S. and around the world — politics, weather, entertainment, lifestyle, finance, sports and much more.

9. Trim tab - Wikipedia

   en.wikipedia.org/wiki/Trim_tab

   Typical trim tabs on aileron, rudder and elevator. Trim tabs are small surfaces connected to the trailing edge of a larger control surface on a boat or aircraft, used to control the trim of the controls, i.e. to counteract hydro- or aerodynamic forces and stabilise the boat or aircraft in a particular desired attitude without the need for the operator to constantly apply a control force.