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  2. Butterworth cover - Wikipedia

    en.wikipedia.org/wiki/Butterworth_Cover

    Butterworth hatches are not the main access hatches, but are the servicing hatches, and are generally closed with a metal cover plate with a gasket that is fastened to the deck by a number of bolts which stick up from the deck. Holes on the edges of the plate fit over these bolts and the cover is fastened down with nuts or dogs.

  3. Hold (compartment) - Wikipedia

    en.wikipedia.org/wiki/Hold_(compartment)

    Six large cargo hatch covers on a capesize bulk carrier ship as she approaches the Egyptian-Japanese Friendship Bridge. A cargo hatch or deck hatch or hatchway is type of door used on ships and boats to cover the opening to the cargo hold or other lower part of the ship. To make the cargo hold waterproof, most cargo holds have cargo hatch.

  4. Compartment (ship) - Wikipedia

    en.wikipedia.org/wiki/Compartment_(ship)

    A watertight hatch with the door dogs clearly visible Three types of doors are commonly used between compartments. A closed watertight door is structurally capable of withstanding the same pressures as the watertight bulkheads they penetrate, although such doors require frequent maintenance to maintain effective seals, and must, of course, be ...

  5. Ship floodability - Wikipedia

    en.wikipedia.org/wiki/Ship_floodability

    Compartmentalisation of a ship, to reduce floodability Parts of a water-tight compartment. Floodability is the susceptibility of a ship's construction to flooding.It also refers to the ability to intentionally flood certain areas of the hull for damage control purposes, or to increase stability, which is particularly important in combat vessels, which often face the possibility of serious hull ...

  6. Boat building - Wikipedia

    en.wikipedia.org/wiki/Boat_building

    Hatch: an opening in the deck or cabin of a vessel, with a hinged, sliding, or removable cover. Heads: a marine toilet, deriving from toileting at the catsheads in square rigger days. Hull: the bottom and sides of a vessel. Inwale (or "sheer clamp"): the upper, inner longitudinal structural member of the hull, to which topside panels are fixed.

  7. Conning tower - Wikipedia

    en.wikipedia.org/wiki/Conning_tower

    The boat's conning tower is more of a "conning tube", as it lies parallel with the main pressure hull. Just over 6 metres (20 ft) long, with a diameter of roughly twice the distance between the weather deck and the bottom of the number "383". Bridge fairwater of the Polish submarine ORP OrzeĊ‚ in 1940 The sail of the French submarine Casabianca