Openex has expanded our fabrication capability to include the manufacture of Navy standard structural and ballistic watertight, airtight, and non-tight doors, hatches, and scuttles. We can provide custom fabrication servies for all these items, as well as ladders and manholes.
Watertight doors, hatches, and scuttles (commonly referred to as watertight closures) play a critical role especially in surface ship damage control.
A watertight door can prevent the passage of water in both directions when subjected to a head of water i.e it can withstand water pressure from both sides. They are designed to withstand continuous submersion and are therefore located below waterline like shaft tunnels, ballast tanks, bow thruster compartments etc. all openings below the waterline has to be watertight.
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. These doors are used onboard in many ships such as in the fore and aft passageways underdeck and in engine room bulkheads leading to shaft tunnels in container vessels, large passenger ships, offshore vessels, oil exploration vessels.
They are used in areas where chances of flooding are high. Areas such as engine room compartments and shaft tunnels and some of such places.
TYPE A:
This type of doors may be left open and are to be closed only during an emergency.
TYPE B:
This type of watertight doors should be closed and are made to remain open only when personnel are working in the adjacent compartment.
TYPE C:
This type of watertight doors is to be kept closed all the time. It may be opened only for sufficient time when personnel are passing through the door compartment.
TYPE D:
This type of watertight doors is not SOLAS compliant. These doors shall be closed before the voyage commences and shall be kept closed during navigation. These doors cannot be upgraded to another category.
The primary function of watertight doors is to provide access and prevent progressive flooding. Their secondary function is to control the spread of fire, toxic vapors and smoke. Doors, along with hatches, scuffles and manholes, allow movement of personnel throughout the ship. There are approximately twenty different types of watertight closures, each designed with a specific purpose.
Contact us at sales3@openex.com.cn or call us at +86 186 5928 0806 for your watertight closures needs.