Impulse ship
An impulse ship was a spacecraft limited to impulse propulsion.

The Bajoran Militia employed impulse ships of various designs. In 2375, the Bajoran Republic deployed twelve of those vessels in a blockade around Derna, commanded by Colonel Kira Nerys, to prevent the Romulans from supplying weapons to their hospital complex. The move was largely symbolic, as the ships themselves posed little military threat to the Romulans. ()

Impulse ships at Derna 
  (three)
 Bajoran interceptors (three, plus Kira's interceptor)
 Bajoran raider (one)
 Bajoran vessels (three)
 Karemma ships (two)

Spacecraft classifications