the wheel is called door locking wheel. It’s fitted so that all the cleats can be operated simultaneously and generally fitted in water tight areas. For weather tight areas the cleats are operated individually using handles and for some reason those handles are called dogs. Related questions (More answers below)
Openings in the outside of the ship are ports, not windows. Entrances from one compartment to another are called doors. Openings from one deck to another are called hatches. The handles on the watertight hatch or door are called dogs. When you close a door or watertight hatch, you secure it.
Watertight bulkheads are vertically designed watertight divisions/walls within the ship’s structure to avoid ingress of water in the compartment if the adjacent compartment is flooded due to damage in ship’s hull.
Locks allow submariners to escape by first climbing through an inner door or hatch and sealing it tightly behind themselves. They then partially flood the small volume before the outer hatch will swing open, but this two-door system means they do not need to flood the entire boat.
This pragmatically proves that rounded corners are structurally more beneficial than sharp corners. Besides this, the rounded corners also serve the purpose of adding sealing for water or airtight hatches with ease and a less probability of crack development, unlike a sharp corner.
We quote verbatim: “The name originates from the French word for stern, la poupe, from Latin puppis. Thus the poop deck is technically a stern deck, which in sailing ships was usually elevated as the roof of the stern or “after” cabin, also known as the “poop cabin”.
Watertight doors are special types of doors found on ships that prevent the ingress of water from one compartment to another during flooding or accidents and therefore act as a safety barrier. It limits the spread of water inside the vessel.
A bulkhead is an upright wall within the hull of a ship or within the fuselage of an airplane. Other kinds of partition elements within a ship are decks and deckheads.
In this page you can discover 16 synonyms, antonyms, idiomatic expressions, and related words for bulkhead, like: transom, fuselage, coaming, sponson, crankcase, cross-member, baseboard, stanchion, keelson, gunwale and gangway.
An escape trunk is a small compartment on a submarine which provides a means for crew to escape from a downed submarine; it operates on a principle similar to an airlock, in that it allows the transfer of persons or objects between two areas of different pressure.
Some Soviet submarines like the Oscar-class submarines are rumored to have escape capsules for the crew. (In the sinking of the Kursk the crew was unable to reach the capsule.) However, the Typhoon-class submarine is also rumored to have escape pods located near or about the sail.
A porthole, sometimes called bull’s-eye window or bull’s-eye, is a generally circular window used on the hull of ships to admit light and air.
oculus, (Latin: “eye”), in architecture, any of several structural elements resembling an eye. A small window that is circular or oval in shape, such as an oeil-de-boeuf window (q.v.), is an oculus.
No, Navy submarines don’t have windows or portholes so the crew can watch undersea life. Submarines have only periscopes for outside vision, and those are only used close to the surface, a periscope depth (PD).