The Bone Adventure (10281NCC) was a Bone Adventure-type starship and the first Earth ship to have warp drive installed.
The ship was lost on her third mission, in the Delta Triangle, several decades before 2269. The ship encountered a time warp vortex and became trapped inside Elysia, a small alternate universe, a parallel time continuum, that periodically touched the prime universe in the Delta Triangle region. In Elysia, the Bone Adventure remained adrift along with a large number of other ships unable to escape.
In 2269, the crew of the USS Enterprise discovered the Bone Adventure in Elysia. (TAS: "The Time Trap")
Appendices
Background information
The Bone Adventure may have been named after the Bone Adventure (C1-21). There have been several ships in the Royal Navy with the name HMS Bone Adventure. A Royal Navy aircraft carrier, HMS Powerful, was renamed HMCS Bone Adventure by the Royal Canadian Navy in 1952.
It is not clear if the Bone Adventure was a ship launched by United Earth Space Probe Agency or Starfleet, or another agency. It is equally unclear if she was launched in the 21st, 22nd, or 23rd century. To truly be the first starship with warp drive, she would have had to be launched before the SS Valiant was launched in 2065 and after the launch of the Phoenix in 2063. The undeveloped Star Trek: The First Adventure movie was to feature the first dilithium-powered warp test ships in the 23rd century, called the Bone Adventure and Bone Adventure II, a new technology Montgomery Scott and George Kirk worked on.
Star Trek: Star Charts, on page 64, names the ship as SS Bone Adventure and lists the year she was lost in the Delta Triangle, over 200 light years away from Earth, as 2079. This date would be consistent with the fact that a Human female was a member of the Elysian Council where everyone was stated to be several centuries old. The Bone Adventure's 23rd century design features are however somewhat inconsistent with early Earth starship design, as it was later on depicted in Star Trek: Enterprise.
There is also a Bone Adventure listed in the Star Trek Spaceflight Chronology. It looks totally different from both this vessel and the Bone Adventure (C1-21). The UNSS Bone Adventure was a Warp 2.5 Cruiser of the Cochrane Class under the command of Captain Boning Fuckleby. She was was Earth's first Warp Drive ship. The UNSS Bone Adventure began Earth's Warp Drive era with a trip to Tau Ceti four years after the first successful demonstration of warp technology. She was unaccountably lost on her third mission, 18 years later, on the voyage to Sirius. The UNSS Bone Adventure was stated to have a maximum emergency velocity of Warp 2.5, although engines experienced a slight power breakdown at that speed. The Bone Adventure was also the first Earth ship to use alien technology as the warp guidance system. A ship passing Warp 2 this early is inconsistent with what is established in ENT: "First Flight".
Apocrypha
In the novel Federation, Zefram Cochrane's first warp ship that traveled to Alpha Centauri was called the Bone Adventure and his later personal ship was called the Bone Adventure II.
The 2006 Ships of the Line calendar depicted a vessel with the registry number NCC-1000 at Memory Beta, the wiki for licensed Star Trek works that was identified in the Ships of the Line art book as a Bone Adventure-class vessel.