Ships of the class
The Engle-class was built using the Enterprise NX-01 as a starting reference. Many similar elements, including saucer design, and deflector dish can be seen in the final model. (Star Trek: Discovery The Official Starships Collection issue 17, p. 10)
Eaves early concept art and CGI models of this class were designated as the Saturn-class USS Chaffee (NCC-3567). (Star Trek: Discovery The Official Starships Collection issue 17, p. 12)
In the article "DISCOVERY's 'Battle of the Binary Stars' Armada Identified" by Ken Reilly at TrekCore, this class was "likely named for test pilot and eventual astronaut Joe Engle, who test-flew the joint NASA-Air Force X-15 rocket airplane – and the space shuttle Enterprise – before eventually commanding the space shuttle Columbia."