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An off-road trailer is designed to be towed behind a 4x4 or off-road vehicle to remote places not possible with a standard utility trailer. Most off-road trailers are associated with Overlanding , the self-reliant exploration of remote locales where the journey is as important as the destination.
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.
Most cargo hatches have a coaming, a raised edge around the hatch, to help keep out water. The term batten down the hatches is used prepare the ship for bad weather. This may included securing cargo hatch covers with wooden battens, to prevent water from entering from any angle. The term cargo hatch can also be a used for any deck opening ...
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 ...
As larger and larger submarines were made, and eventually fitted with periscopes, this protrusion grew into a small pressure-hull of its own, typically connected to the control room inside the boat's main pressure-hull via a watertight hatch to mitigate the risk of flooding if the viewports or periscopes were damaged. Thus, the conning tower ...
Evacuation slide used in an emergency drill. An evacuation slide is an inflatable slide used to evacuate an aircraft quickly. An escape slide is required on all commercial (passenger carrying) aircraft where the door sill height is such that, in the event of an evacuation, passengers would be unable to step down from the door uninjured (Federal Aviation Administration requires slides on all ...