TM 55-607/NAVSEA OP 3221 Rev 2
Figure 6-12. Hangar sweatboards.
b. Considered next under preload securing are the requirements for bulkhead construction. Heat or nonheat
bulkheads are constructed whenever loads must be stowed along the athwartship structural bulkheads. Heat bulkheads
are tightly constructed to prevent radiated heat, such as heat from engineroom bulkheads, uptakes, or casing, from
reaching the cargo. Nonheat bulkheads are recognized by open construction. A nonheat end bulkhead under