Bajoran Impluse ships were used by the Bajoran Underground to raid and attack the Cardassian forces occupying the planet Bajor.
Around Stardate 47079.2 during a time when the Federation was forced to withdraw from the station Deep Space Nine, Major Kira and Leiutenant Dax used a Bajoran Impulse ship to get to the planet Bajor with evidence that the 'Bajor for Bajorans' movement known as the 'Circle' were being secretly supplied by the Cardassians and that minister Jaro was keeping the knowledge from the people.
The Bajoran Impulse Ship was shot down by a Bajoran Assualt Vessel.