NO ... This brick bulkhead is the separation between the warehouse and the powder room. The protection is not for quicksilver, it is for powder.Very interesting, that they installed a brick-work wall, I guess for additional protection of the quicksilver......
was it only installed fore-side and not aft?
The powder storage room has bulkheads reinforced with bricks and / or masonry.
The upper level (orlop) will be the room of encartuchado and the "santabarbara" (cellar of the constable) and the room of the lantern. All this is the set of the ship's powder