These gunships are seen guarding T31 armed transports, and Outlaw stations.

Name	Zulu-class gunship
UNID	&scZulu;
Class	Zulu
Type	gunship
Score	45
Mass	25
Cargo Space	5
Max Speed	20
Thrust	150
Maneuverability	4
Wreck Chance	20
Armor
light ceramic armor X2
Weapons
recoilless cannon

There isn't much special about these ships, except that their armor is resistant to laser damage so they are somewhat hard to kill with lasers.