B-Class Destroyer

A B-Class Destroyer was a military vessel used by the Earth Empire circa the 25th century. Henry Whittington Smythe was among those aboard a B-Class Destroyer when it was attacked by the Sontarans during the Siege of the Hexion Gates. With oxygen escaping through the riddled hull, the Sontarans boarded and demanded the surrender of the crew. However, Smythe learned how to fight back by attacking their weak point in their probic vent (PROSE: The Taking of Chelsea 426)