The USS Emma (registered as NCC-10034) was a Federation Miranda-class starship that disappeared in Sector 107-A. Captain Johansen came into command after his predecessor died in a power overload in the ships Engineering. Johansen was well liked among most of his crew and trusted most of all. The Emma was scuttled by Johansen after he took command of the Trela, but he left a subspace message onboard a Class-2 probe should the Enterprise-C find it.