A is for Adelphi, the Federation starship involved in the disastrous Ghorusda Affair sometime prior to the "Tin Man" incident of 2366.
B is for Bozeman
C is for Captain's Yacht: Cousteau
D is for Defiant, USS NCC 1764
E is for Eagle, USS...NCC-956...mid-23rd century Constitution-class starship.
F is for Fearless, USS NCC-14598 mid-24th century Excelsior-class starship