Yes, that info is there. Happy to share. http://library.mysticseaport.org/initiative/CuVessel.cfm?VesselId=104004
Connecticut Ship Database, 1789-1939

General Lyon (Steam Propeller)

Summary: Year Built: 1864 Place Built: East Haddam, CT
Home Port: East Haddam, CT Customs District: Middletown
Years registered: 1864 Function: coasting trade
Vessel Demise: In 1865 vessel burnt at sea.

Length: 186 Beam:
34 ft. 4 in. Tonnage: 1026 16/95
Depth: 17 ft. 2 in. Masts: two Stern: round
Decks: two Head: figurehead FigureHead:

Masters
Name: Dates:
Goodspeed, William H. 1864

In late 1863, William Goodspeed began construction of a propeller steamship, assured of charter by the United States Army for use as a troop transport. There are no surviving descriptions, drawings or photographs of this new vessel, the General Lyon. What little is known of its appearance and dimensions come from ship’s registers and similar documents.

There's somewhat more than that about the certifications, fitness for horses, insurance, the charter with the gov't and so on.

Who are you researching? I may have something for you. Or you may fill a gap for me! I have been through all the military records and also identified many civilians. Very interested in your findings.
Regards
Peter