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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.
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 ...
Some twistlocks are permanently installed (e.g., on the decks of container ships or on the beds of semi-trailers), while others are temporarily installed and removed as needed, for instance to stack containers securely on ships, or in storage yards.
The two containers are locked together by twisting the device's handle. [49] A typical twist-lock is constructed of forged steel and ductile iron and has a shear strength of 48 tonnes. [50] The buttress system, used on some large container ships, uses a system of large towers attached to the ship at both ends of each cargo hold. [51]
[[Category:Patrol boat navigational boxes]] to the <includeonly> section at the bottom of that page. Otherwise, add <noinclude>[[Category:Patrol boat navigational boxes]]</noinclude> to the end of the template code, making sure it starts on the same line as the code's last character.
Electrical service to the FEMA trailers is installed by the local power company. (For example, in most of the Gulf Coast region power is provided by the Entergy Corporation.) Each trailer has its own power meter. Trailers have ports for telephone access, cable, and Internet access. However, these services are not handled by FEMA, and a trailer ...
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