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  2. 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

  3. 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 ...

  4. 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 ...

  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. Stuffing box - Wikipedia

    en.wikipedia.org/wiki/Stuffing_box

    The stuffing box prevents water from entering the boat's hull. In many small fiberglass boats, for example, the stuffing box is mounted inboard near the point the shaft exits the hull . The "box" is a cylindrical assembly, typically of bronze, comprising a sleeve threaded on one end to accept adjusting and locking nuts.

  7. Boat lift - Wikipedia

    en.wikipedia.org/wiki/Boat_lift

    A boat lift, ship lift, or lift lock is a machine for transporting boats between water at two different elevations, and is an alternative to the canal lock. It may be vertically moving, like the Anderton boat lift in England , rotational, like the Falkirk Wheel in Scotland , or operate on an inclined plane , like the Ronquières inclined plane ...

  8. Was Baltimore’s bridge collapse the fault of the cargo ship ...

    www.aol.com/finance/baltimore-bridge-collapse...

    Baltimore’s Francis Scott Key Bridge crumpled at the impact of the Dali shipping container a gross tonnage of 95,000 on Tuesday morning. The bridge, constructed in 1977, didn’t stand a chance ...

  9. 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.

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