Class 3 neutronic fuel carrier

The Class 3 neutronic fuel carrier was a type of transport that saw service during the 23rd century. 

The Class 3 consisted of a narrow central spine with a small forward command module and a bulky aft engineering section. Four fuel tanks were attached to the ventral side of the spine. It also had additional cargo holds for other types of cargo. The Class 3 also had accommodation to transport up to 300 individuals, which some civilian operators used so to make planetary runs in addition to their fuel transportation. Variants used by Starfleet often lacked these facilities and were exclusively used as fuel transports. 

Class 3 neutronic fuel carriers

 * Kobayashi Maru