"The Beast" was the name given by the crew of the USS da Vinci to a large starship encountered in 2376 (SCE eBook: The Belly of the Beast), belonging to the Hlangry race. (SCE eBook: War Stories, Book 1)
The Beast was many magnitudes larger than the Sovereign-class USS Enterprise-E, and was a cruise ship designed to carry tens of thousands of passengers and crew. The vessel also a deployed a zero-point drive engine which meant it could travel faster that a Federation vessel and never need to refuel.
In 2376, The Beast was infiltrated by a swarm of twelve man-sized insectoids resembling Earth wasps. The twelve insects infected all of the passengers with their eggs and put all of the passengers inside The Beast's engine core, where the eggs hatched and the creatures grew, feeding off the bodies of the passengers. The twelve insects then took The Beast to Blossom IV to attack the planet and gain more food so that more young could be hatched. Fortunately, the Enterprise-E was able to stop the ship and destroy the control room, killing the twelve parent insects.
When the crew of the da Vinci discovered the hatchery, the SCE team discovered that the eggs had hatched and the young had escaped. After a fight to keep control of The Beast, the SCE team managed to overload the engine core and destroy the ship. (SCE eBook: The Belly of the Beast)