inflammable cargo
inflammable charge

The latter steamer quickly transferred her inflammable cargo and her pilot to the larger vessel which then sped to Hampton Roads.

The jury censured the steamboat's owners for maintaining a dangerous ship and denounced them for transporting inflammable cargo on a steamboat carrying passengers.

An inquiry found it most likely that the fire had been caused by members of the crew or passengers broaching cargo in the hold using a naked light, thus igniting the large quantity of inflammable cargo including tar, oil, varnish and pitch.