Wikia

The USS Equulus (NCC-603) was a Hermes-class (Monoceros sub-class) deep-space exploration starship in service to Starfleet in the late 23rd and early 24th centuries. (TOS reference: Star Fleet Technical Manual)

Circa 2301, the Equulus encountered a temporal vortex beyond the then-current borders of Federation space. This vortex was four light-years from the planet Rabolum. (NF short story: "Through the Looking Glass")

Hermes-class class I scout starships
Hermes-class	Aeolus • Anubis • Batidor • Bowie • Bridger • Calypso • Carson • Cody • Cochise • Crockett • Diana • Hermes • Quintillus • Revere • Sacajawea • Spaker • Tonti
Monoceros-subclass	Aries • Camelopardus • Canis Major • Canis Minor • Equulus • Leo • Leo Minor • Lepus • Lupus • Lynx • Monoceros • Pegasus • Taurus • Ursa Major • Ursa Minor • Vulpecula
Cygnus-subclass	Apus • Aquila • Columbia • Corvus • Cygnus • Grus • Pavo • Phoenix • Tucana

USS Equulus