Marine Hatch

Hatch is a general term for the cover and its opening and closing device for closing various hatches on the ship. The main function of the hatch cover is to ensure that waves and rain will not invade the cargo hold, and some hatch covers also bear the weight of the cargo on the deck.

According to the size of the hatch, it is divided into large hatch covers and small hatch covers. The former is used for cargo holds for loading bulk cargo or vehicles, also known as cargo hatch covers; the latter is used for cargo holds for loading liquid cargo, refrigerated cargo, etc., as well as personnel access hatches and manholes. Small hatch covers are generally opened and closed by manpower, while large hatch covers must be opened and closed with electric or hydraulic drive mechanical devices.

According to the tightness, there are watertight, oiltight, gastight and non-tight hatch covers, etc. According to the different tightness requirements, the hatch cover plate and the adjacent parts are respectively equipped with cabin sealing devices or sealing devices composed of moulding, fillers, gaskets, compactor, etc.

Main Products

Hatch design requirements

1. The structural strength of all hatch covers on exposed decks should be equivalent to the strength of their adjacent structures;
2. The closing device of the hatch cover should be weathertight;
3. If the hatch cover of the vehicle deck bears vehicle load, the design pressure on the hatch cover should be checked for strength according to the value of the vehicle load.
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Manhole Cover

Sunk Watertight

Steel Hatch