9 Factors restricting the operation of watertight doors
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Statutory Documents - IMO Publications and Documents - Circulars - Maritime Safety Committee - MSC.1/Circular.1380 – Guidance for Watertight Doors on Passenger Ships Which May be Opened During Navigation – (10 December 2010) - Annex – Guidance for Watertight Doors on Passenger Ships Which may be Opened During Navigation - 9 Factors restricting the operation of watertight doors

9 Factors restricting the operation of watertight doors

 Certain operating conditions, or combinations of several factors, should necessitate categories A, B and C doors being closed during navigation to preserve survivability. In particular, the area in which the ship is operating should be continually evaluated for associated risks with any potentially hazardous conditions. Except for category A doors for which the ship satisfies the floatability assessment criteria, it is recommended that categories A, B and C doors are kept closed during navigation while the ship is operating:

  • .1 in waters with high traffic density;

  • .2 near coastal waters;

  • .3 in heavy weather;

  • .4 in dangerous ice conditions;

  • .5 in waters where soundings are unreliable;

  • .6 during periods of restricted visibility;

  • .7 within port limits or compulsory pilotage waters;

  • .8 when loose objects are nearby, which could potentially prevent the watertight door from being closed; or

  • .9 under any condition when the ship's master considers the situation to necessitate all watertight doors to be closed.

Parent topic: Annex – Guidance for Watertight Doors on Passenger Ships Which may be Opened During Navigation
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