I somehow managed to mount a transport engine on my Waran. However it didn't show up as equipped so I couldn't remove it. Upon undocking I found that I had the transport speeds.
I went back to a station and mounted my normal engine. The situation just got even more messed up.
Now I am trying to shout to the admins about how my Waran has a 139 m/s impulse, fighter thrust speed and 390 m/s cruise.