As you can see, the nature of the space vessel Antares is not entirely clear.
It should be pointed out that the middle quote does not refer to the
Antares at all. The transport that crashed was some other vessel altogether.
What the ship
is called is "cargo vessel" and "science probe vessel". But the latter could actually be "Science Probe vessel", that is, a vessel in UE
SPA registry (it was UESPA specifically that was to be contacted for her loss). Kirk's ship would be United Star Ship (or UnitedFederationofPlanets Starfleet Starship), hence
USS Enterprise; Ramart's could be
UESP Antares. While being purely a cargo vessel.
However, the third relevant quote would be this...
Spock: "Your mind is not on the game, Captain. Check. The Antares?
Kirk: "A survey ship with twenty men aboard lost. No reason. Obviously, Captain Ramart was not aware of any trouble. I can't figure it."
Timo Saloniemi