Bulkhead

Bulkhead - D

Bulkheads under construction
USS South Dakota (BB-57)

Bulkhead - a vertical wall inside the hull, except for the double side, dividing the internal space into compartments ^[1] . Bulkheads also include the outer walls of superstructures and deckhouses .

Bulkheads are divided into:

• depending on the orientation relative to the hull:
  • transverse;
  • longitudinal;
• depending on the installation location:
  • ship hull bulkheads ( hold and twin )
  • bulkheads of superstructures and logging;
• depending on execution:
  • water and oil impermeable;
  • gas tight;
  • permeable;
• depending on the form:
  • flat (including those reinforced by a set );
  • corrugated ;
  • cylindrical;
  • spherical;
• depending on the ability to perceive the load:
  • durable (withstand significant loads and can be supports for the overlapping of the housing);
  • lungs;
• depending on destination:
  • main (main), running across the entire width of the vessel from the deck to the bottom and ensuring the invariability of the hull during its torsion and bending. When the compartment is flooded, water is prevented from spreading along the vessel; in this regard, they are also called emergency ;
  • ramming (separate the forepeak from the hold space);
  • afterpeak (separate afterpeak from hold space);
  • bulkheads of tanks ( ballast , roll , trim , fuel and others);
  • diptank bulkheads or bunker (limit liquid fuel tanks or coal pits);
  • fenders (longitudinal and transverse bulkheads with cutouts, limiting the impact force of the overflowing in tanks and tanks when pumping fluid);
  • tunneling (designed to separate the walls of the propeller shaft tunnel, corridors of electric tracks, passages along the vessel);
  • bulkheads of mines (loading, machine, ventilation and others);
  • fire (divide the ship into fire compartments);
  • hold;
  • external bulkheads (walls of superstructures and deckhouses);
  • bulkhead bulkheads or lungs;
  • bulkhead cofferdams .