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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. Towing - Wikipedia

   en.wikipedia.org/wiki/Towing

   Large ballast tractor pulling a heavy load (a transformer) on a hydraulic modular trailer using a drawbar. A British Airways Concorde being towed in New York City. Towing is coupling two or more objects together so that they may be pulled by a designated power source or sources. The towing source may be a motorized land vehicle, vessel, animal ...

4. Stuffing box - Wikipedia

   en.wikipedia.org/wiki/Stuffing_box

   Boats. A small boat stuffing box comprising an adjusting nut, a locking nut and a sleeve. On a boat having an inboard motor that turns a shaft attached to an external propeller, the shaft passes through a stuffing box, also called a "packing box" or "stern gland" in this application. The stuffing box prevents water from entering the boat's hull.

5. Conestoga wagon - Wikipedia

   en.wikipedia.org/wiki/Conestoga_wagon

   As a result, the Conestoga wagon is more representative in technological niches as a large-sized basket on a set of wheels than a box. Its designs were meant to replicate large-sized watercrafts that serve the dual purposes of carrying heavy quantities of goods and withstanding hostile environmental conditions such as currents. Historians ...

6. Dorade box - Wikipedia

   en.wikipedia.org/wiki/Dorade_box

   The grey area indicates the deck of the boat. A dorade box (also called a dorade vent , collector box , cowl vent , or simply a "ventilator") is a type of vent that permits the passage of air in and out of the cabin or engine room of a boat while keeping rain, spray, and sea wash out.

7. Intermodal container - Wikipedia

   en.wikipedia.org/wiki/Intermodal_container

   Intermodal container. A 40-foot-long (12.2 m) shipping container. Each of its eight corners has an essential corner casting for hoisting, stacking, and securing. Containers stacked on a large ship. An intermodal container, often called a shipping container, or cargo container, (or simply “container”) is a large metal crate designed and ...