My Collection of various ships seen and
some maybe not seen!!!
(I tried to come as close as possible to size comparison)
 

Galaxy Class
 

Galaxy Class
                                                                                                                        (Future refit)
.
.
Ambassador Class
.
.
Nebula Class
.
.
. Sovereign Class
.
.
Intrepid Class
.
.
Prometheus Class

..
Constitution Class (Original Enterprise)
..
.
Constitution CLass (Refit)

.
Excelsior CLass
.
.
Excelsior Class (Refit)
.
.
Miranda Class
.
.
Miranda Class (Refit)
.
 .
Soyuz Class
.
.
Constellation Class
.
.
Defiant Class
.
.
Steam Runner CLass
.
.
Oberth Class
.
.
.Olympic CLass Research Vessel
.
.
Daedalus Research Class
.
.
 Warpsled Class
.
Dy100 class
.
Danube Class Runabout
.

Shuttle's
 Shuttle../ Type 6../Type 7../Type 8../Type 9../type15../Type18
.
 Orbital Shuttle
.
 Travel Pod