Osler type
The Osler-type Federation starship was in use by Division 14 in the early 2380s. 

This ship type was smaller than  in size, and capable of atmospheric entry and landing. 

The Osler had a black hull with a darkened interior, in reference to this design style, it was later suggested by the Edosian medical specialist that Division 14 should "maybe paint the ship some friendlier colors [and] turn on some lights, so it isn't so creepy." ()

Ships of the class 
Osler (NX-75300)

Federation starship classes