Manhole
A manhole is an opening in the deck of a ship or a vessel that provides access to the machinery spaces, cargo holds, tanks, or other compartments below the main deck. It is usually circular or rectangular in shape and is fitted with a cover or lid that can be removed for maintenance or inspection purposes. Manholes are essential for the safe and efficient operation of a ship, as they allow crew members to access critical areas of the vessel and perform necessary tasks. However, they can also pose a hazard if not properly secured or maintained, as they may allow water to enter the ship or cause injury to personnel.
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