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2. 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 ...

3. Lockrod - Wikipedia

   en.wikipedia.org/wiki/Lockrod

   Today, sometimes confused with locking bars or bar locks, lockrods have evolved to secure virtually every trailer or container that has a swing door (a door that swings open and closed rather than rolls up). Roll up doors are sometimes used in place of swing doors on trailers that make shorter haul deliveries. Diagram of a refrigerator door ...

4. Twistlock - Wikipedia

   en.wikipedia.org/wiki/Twistlock

   The female part of the connector is the 7×7× 4 + 1 ⁄ 2 in (180×180×110 mm) corner casting, which forms each of the eight corners, welded to the container itself, and has no moving parts, only an oval hole in the tops of the four upper corners, and in the bottom of the four lower corners.

5. Caisson lock - Wikipedia

   en.wikipedia.org/wiki/Caisson_lock

   Work on the second lock was suspended (the third lock had not been started) and early in the following year an inclined plane, to carry boats’ cargoes in wheeled tubs, was built instead. Eventually a flight of nineteen locks on a longer alignment up the slope was constructed, with a Boulton & Watt Steam Pumping Station, capable of lifting ...

6. Trailer brake controller - Wikipedia

   en.wikipedia.org/wiki/Trailer_brake_controller

   The heavier the trailer, the higher the gain adjustment is set and therefore the less chances of wheel lock-up. [1] A wide range of trailers contain trailer brakes (for example, larger boat trailers, horse trailers, covered utility trailers, enclosed trailers, travel trailers including small 10-foot or 3.0-metre and longer tent trailers and car ...

7. Towing - Wikipedia

   en.wikipedia.org/wiki/Towing

   Small enclosed trailers are fully covered by four sides and a roof. These types of trailers are generally used for carrying livestock since they protect the contents from weather. People also rent these types of trailers for moving boxes, furniture and other materials. Boat trailers are used specifically for pulling boats.

8. Flash lock - Wikipedia

   en.wikipedia.org/wiki/Flash_lock

   The lock allowed boats to pass the weir while still allowing the mill to operate when the gate was closed. However it could take up to a day or even more to restore the water levels after a boat had passed, so their use was unpopular with the millers. Capstan Wheel near Hurley, England that was used to winch boats upstream past a flash lock. It ...

9. Peterborough Lift Lock - Wikipedia

   en.wikipedia.org/wiki/Peterborough_Lift_Lock

   The Peterborough Lift Lock is a boat lift located on the Trent Canal in the city of Peterborough, Ontario, Canada, and is Lock 21 on the Trent-Severn Waterway. For many years, the lock's dual lifts were the highest hydraulic boat lifts in the world, raising boats 65 ft (20 m). This was a considerable accomplishment in the first years of the ...