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