Appendix 2 – Technical Standards for Watertight Doors on Passenger Ships
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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 - Appendix 2 – Technical Standards for Watertight Doors on Passenger Ships

Appendix 2 – Technical Standards for Watertight Doors on Passenger Ships

 Only after careful consideration of the impact on ship operations and survivability should an Administration permit a watertight door to remain open during navigation. This watertight door checklist has been designed to assist an Administration in making such a determination through validation of each technical standard. Other non-technical considerations are contained in the main guidance document.

Ship  
Date:  
Door(s) No.  

  Note: SOLAS regulations referred to in parentheses are previous SOLAS chapter II-1 regulations.

Technical Standards Yes No Comments
Passenger ship constructed on or after 1 February 1992 (Date of new amendments)      
SOLAS regulation II-1/13.5.1 (15.6.1) Can the door be closed simultaneously from navigation bridge in not more than 60 seconds?      
SOLAS regulation II-1/13.5.2 (15.6.2) Can the door be closed with the ship listed to 15º in either direction and with a static head of water 1 m above the sill?      
SOLAS regulation II-1/13.5.3 (15.6.3) Are controls located close to the door, such that if damage is sustained within one fifth of the breadth of the ship the door will continue to operate?      
SOLAS regulation II-1/13.6 (15.6.4) Is there an indicator to show all remote operating positions whether the door is open or closed at the navigation bridge and at the location where hand operation above deck is required?      
SOLAS  regulation II-1/13.7.1.1 (15.7.1.1) Does the door have a vertical or horizontal motion?      
SOLAS  regulation II-1/13.7.1.2 (15.7.1.2) Does the door have a maximum clear opening width of 1.2 m or less?      
SOLAS  regulation II-1/13.7.1.2.1 (15.7.1.2.1) For doors greater than 1.2 m wide, has special consideration been given to the strength of the door and its closing appliance in order to prevent leakage?      
SOLAS  regulation II-1/13.7.1.2.2 (15.7.1.2.2) For doors greater than 1.2 m wide, is it located outside the damage zone B/5?      
SOLAS regulation II-1/22.1 (15.7.1.2.3) For doors greater than 1.2 m wide, will it be kept closed when the ship is at sea except for limited periods when absolutely necessary?      
SOLAS  regulation II-1/13.7.1.3 (15.7.1.3) Are the doors fitted with necessary equipment to close and open the door using electrical power, hydraulic power or any other form of power that is acceptable to the Administration?      
SOLAS  regulation II-1/13.7.1.4 (15.7.1.4) Is individual hand-operated mechanism provided for each door that permits it to be open or closed from either side and from above the bulkhead deck within 90 seconds?      
SOLAS regulation II-1/13.7.1.4 (15.7.1.4) Is direction of rotation or other movement clearly indicated and displayed at all operating positions?      
SOLAS regulation II-1/13.7.1.5 (15.7.1.5) Is the door provided with controls for opening and closing the door by power from both sides of the door and also for closing the door by power from the central operating console at the navigating bridge?      
SOLAS regulation II-1/13.7.1.6 (15.7.1.6) Is the door provided with an audible alarm, distinct from any other alarm in the area, which will sound whenever the door is closed remotely by power for at least 5 seconds, but no more than 10 seconds, before the door begins to move and shall continue sounding until the door is completely closed?      
SOLAS regulation II-1/13.7.1.6 (15.7.1.6) During remote hand operation, does the audible alarm sound when the door is moving?      
SOLAS regulation II-1/13.7.1.6 (15.7.1.6) Is the audible alarm supplemented by intermittent visual signal at the door in passenger areas of high ambient noise (if so required by Administration)?      
SOLAS regulation II-1/13.7.1.7 (15.7.1.7) Does the door have a uniform rate of closure under power that allows the door to be closed in no less than 20 seconds and no more than 40 seconds with the ship in the upright position?      
SOLAS regulation II-1/15.7.2 Is the electrical power supplied from the emergency switchboard either directly or by a dedicated distribution board situated above the bulkhead deck?      
SOLAS regulation II-1/13.7.2 (15.7.2) Are the associated control, indication and alarm circuits supplied from the emergency switchboard either directly or by a dedicated distribution board situated above the bulkhead deck and capable of being automatically supplied by the transitional source of emergency electrical power required by SOLAS regulation 42.3.1.3 in the event of failure of either the main or emergency source of electrical power?      
SOLAS regulation II-1/13.7.3.1 (15.7.3.1), requires 13.7.3.1 or 3.2 or 3.3 (15.7.3.1 or 3.2 or 3.3) Is there a centralized hydraulic system with two independent power sources each consisting of a motor and pump capable of simultaneously closing all doors with hydraulic accumulators of sufficient capacity to operate all the doors at least three times, i.e. closed-open-closed, against an adverse list of 15°?      
SOLAS  regulation II-1/13.7.3.2 (15.7.3.2), requires 13.7.3.1 or 3.2 or 3.3 (15.7.3.1 or 3.2 or 3.3) Is there an independent hydraulic system for each door with each power source consisting of a motor and pump capable of opening and closing the door with a hydraulic accumulator of sufficient capacity to operate the door at least three times, i.e. closed-open-closed, against an adverse list of 15°?      
SOLAS  regulation II-1/13.7.3.3 (15.7.3.3), requires 13.7.3.1 or 3.2 or 3.3 (15.7.3.1 or 3.2 or 3.3) Is there an independent electrical system and motor for each door with each power source consisting of a motor capable of opening and closing the door that is automatically supplied by the transitional source of emergency electrical power, as required by SOLAS regulation 42.4.2, in the event of failure of either the main or emergency source of electrical power and with sufficient capacity to operate the door at least three times, i.e. closed-open-closed, against an adverse list of 15°?      
SOLAS regulation II-1/13.7.3 (15.7.3) Are there alarms for low pressure/level or loss of electrical power?      
SOLAS regulation II-1/13.7.3 (15.7.3) Are the power systems separated from all other power systems such that a single failure in the electric or hydraulic power-operated systems excluding the hydraulic actuator shall not prevent the hand operation of any door?      
SOLAS regulation II-1/13.7.4 (15.7.4) Are controls handles provided at each side of the bulkhead at a minimum height of 1.6 m above the floor and arranged as to enable persons passing through the doorway to hold both handles in the open position without being able to set the power closing mechanism in operation accidentally?      
SOLAS regulation II-1/13.7.4 (15.7.4) Is the direction of movement of the handles in opening and closing the door in the direction of door movement and clearly indicated?      
SOLAS  regulation II-1/13.7.5 (15.7.5) Are as far as practicable, electrical equipment and components for watertight doors situated above the bulkhead deck and outside hazardous areas and spaces?      
SOLAS regulation II-1/13.7.6 (15.7.6) Do the enclosures of electrical components necessarily situated below the bulkhead deck provide suitable protection against the ingress of water? (See footnote in SOLAS)      
SOLAS  regulation II-1/13.7.7 (15.7.7) Are electric power, control, indication and alarm circuits protected against fault in such way that a failure in one door circuit will not cause a failure in any other door circuit?      
SOLAS regulation II-1/13.7.7 (15.7.7) Are short circuits or other faults in the alarm or indicator circuits of a door protected from causing a loss of power operation of that door?      
SOLAS  regulation II-1/13.7.7 (15.7.7) Does the arrangement prevent leakage of water into the electrical equipment located below the bulkhead?      
SOLAS regulation II-1/13.7.8 (15.7.8) Will a single electrical failure in the power operating or control system of a power-operated sliding watertight door be protected from causing a closed door to open?      
SOLAS  regulation II-1/13.7.8 (15.7.8) Is the availability of the power supply continuously monitored at a point in the electrical circuit as near as practicable to each of the motors required by paragraph 7.3?      
SOLAS  regulation II-1/13.7.8 (15.7.8) Does the loss of any such power supply activate an audible and visual alarm at the central operating console at the navigating bridge?      
SOLAS  regulation II-1/13.8.1 (15.8.1)footnote Is the central operating console at the navigating bridge provided with a "master mode" switch with two modes of control that provide for a "local control" mode for any door to be locally opened and locally closed after use without automatic closure, and a "doors closed" mode to automatically close any door that is open?      
SOLAS  regulation II-1/13.8.1 (15.8.1)footnote Does the "doors closed" mode permit doors to be opened locally and automatically re-close the doors upon release of the local control mechanism?      
SOLAS  regulation II-1/13.8.1 (15.8.1)footnote Does the "master mode" switch normally remain in the "local control" mode, allowing the "doors closed" mode to only be used in an emergency or for testing purposes?      
SOLAS  regulation II-1/13.8.2 (15.8.2)footnote Is the central operating console at the navigating bridge provided with a diagram showing the location of each door, with visual indicators to show whether each door is open or closed, such that a red light indicates a door is fully open and a green light indicates a door is fully closed?      
SOLAS  regulation II-1/13.8.2 (15.8.2)footnote When the door is closed remotely, does the red light indicate the intermediate position by flashing?      
SOLAS  regulation II-1/13.8.2 (15.8.2)footnote Is the indicating circuit independent of the control circuit for each door?      
SOLAS  regulation II-1/13.8.3 (15.8.3)footnote Is the possibility to remotely open any door from the central operating console ruled out?      
Parent topic: Annex – Guidance for Watertight Doors on Passenger Ships Which may be Opened During Navigation
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