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These were controlled from above by rods and wheels led to the level of the bulkhead deck.

If any of these should happen accidentally to be left open, and consequently out of reach, it could be shut off from the main by the wheel on the bulkhead deck.

Without entering into the general question of the advantage of water-tight decks for all ships, it is desirable to form an opinion in the case of the Titanic as to whether making the bulkhead deck water-tight would have been an advantage in the circumstances of the accident, or in case of accident to ships of this class.

I am advised that it is found that with all the compartments certainly known to have been flooded, viz., those forward of No. 4 boiler room, the ship would have remained afloat if the bulkhead deck had been a water-tight deck.

If, however, No. 4 boiler room had also been flooded the ship would not have remained afloat unless, in addition to making the bulkhead deck water-tight, the transverse bulkhead abaft of No. 4 boiler room had been carried up to D deck.