USS Triton
From Star Trek: Theurgy Wiki
The USS Triton was a Federation starship serving in Starfleet in the 24th century.
In 2380, Eve Jenkins was assigned to the Triton on the orders of her grandfather, Admiral Liam Jenkins. She left the ship without permission after discovering that her grandfather was an imposter an inadvertently alerting him of her discovery.
(So far the class of the Triton has not been revealed, but from the name it is most likely a Luna class explorer.)