Alpha Seven was a designation for a small raider-type craft piloted by lieutenant Ro Laren during the joint Maquis attack at Cardassian convoy in 2370.
Laren infiltrated the Maquis as a Federation secret agent in a plan to neutralize Maquis resistance. She informed the Maquis that convoy was transporting biogenic weapons which Cardassians intended to smuggle to Cardassian colonists in Demilitarized Zone. Lieutenant commander William Riker joined Laren in Alpha Seven, disguised as a Bajoran. Laren decided to join the Maquis, so she discovered a trap and beamed out to ''Alpha Nine''. Riker was left in the Alpha Seven and salvaged by the ''Enterprise-D''. (TNG: "Preemptive Strike")