• Watertight door keep shut 150mmx150mm
  • To be kept unlocked during working hours 150mmx150mm
  • This hatch must be kept closed at sea 150mmx150mm
  • This door to be kept locked when not in use 150mmx150mm
  • This door must be kept closed at sea 150mmx150mm
  • This door must be kept closed 150mmx150mm
  • Ventilation to be used prior to entry 300mmx100mm 400mmx150mm
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