Looking at the Encyclopedia Titanica blueprints, it seems like the boilers are on the Orlop Deck and the Engine and Turbine room is on the Tank Top Deck. However, I was told the boiler rooms and the engine and turbine room are all on the Tank Top Deck. Who is right, or am I just reading the blueprints wrong? And if ET is correct, how must one get from the boiler room, down one deck, to the Engine or Turbine room?