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Dy-500 class

UNSS Wheeler, DY-500 class.

Dy500 side

DY-500 class.

The DY-500 was a class of early Earth space vehicles.

The DY-100 class received extensive design and performance reviews to become the DY-500 class. Its almost pure fission engine plant produced a clean gas exhaust who powered a MHD, providing electricity to the ship. At the moment of its commission it was one of the most popular transports. The loss of the DY-500, UNSS Courageous, was the worst tragedy in the 65 first of space exploration. (TOS reference: Star Trek Space Flight Chronology)

The DY-500 and DY-100 were similar enough in appearance that even experienced Starfleet officers were unable to tell the difference between such ships from a distance. For example, upon first encountering the SS Botany Bay, Captain James T. Kirk initally believed the ship to be a DY-500, it was Spock who correctly identified the ship as an older DY-100 type vessel. (TOS episode: "Space Seed")

In 2155, two DY-500s were involved in the First Battle of Altair VI when they attempted to intercept a Romulan fighter, but were called off by the Columbia. (ENT - The Romulan War novel: Beneath the Raptor's Wing)


Starship classes and spacecraft types of Earth
ArrowAssistCavalryChristopherCosmosCZ-100DY-100DY-500DY-700DY-1100-classDaedalusDiscoveryDoppler (scout)EdisonGalliantGangesHopkinsHorizonIntrepid (Earth)J (freighter)LongMarshallMercury (scout)MessierMinutemanNXPoseidonStriderVanguard (starship)VerneY (freighter)YorktownZeus Seal of United Earth

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