From Memory Beta"
The USS Bellerophon (NCC-74705) was a Federation Intrepid-class explorer in service to Starfleet in the late 24th century. (DS9 episode: "Inter Arma Enim Silent Leges", ST roleplay module: Starships). It was commanded by Captain Adams.
The Bellerophon travelled to Deep Space 9 in 2371 to assist Benjamin Sisko and his crew. (DS9 novel: The Laertian Gamble)
In 2375, the Bellerophon transported Federation delegates to Romulus for a conference on the Dominion War. (DS9 episode: "Inter Arma Enim Silent Leges", ST roleplay module: Starships)
In January or February of 2379, Admiral William Ross considered sending the Bellerophon to the Romulan border. (ST novel: Articles of the Federation)
The Intrepid-class was introduced in the early 2370s and was Starfleet's answer to their growing need for a versatile and quick class of starships which were capable of excellent maneuvering at both impulse and warp speed. With their variable geometry warp nacelles, the Intrepid's had a greater control of their warp field, with the added bonus of not damaging the subspace layer. (TNG video game: Armada II manual)
As well as being designed to be quick and maneuverable in combat, the Intrepid's were primarily designed to perform exploration, survey, and courier missions. The Intrepid's advanced sensors made them an excellent exploratory vessel. (ST reference: Starship Spotter)
The Intrepid-class was also one of the first Federation starship classes to be equipped to make a routine planetfall and be able to take off again with ease. (ST reference: Starship Spotter; VOY episodes: "The 37's", "Tattoo", "Basics")
The Intrepid's were also equipped with some of the most advanced computer systems of the time, with bio-neural circuitry replacing most of the isolinear circuitry that had been prevalent on previous starship classes. The bio-neural circuitry sped up the computer's data functions and improved overall performance. (VOY episode: "Caretaker"; ST reference: Starship Spotter)