These upgraded Zulus can be seen guarding Black Market and Outlaw stations.

Name	Zulu II-class gunship
UNID	&scZulu-II;
Class	Zulu II
Type	gunship
Score	70
Mass	25
Cargo Space	5
Max Speed	20
Thrust	200
Maneuverability	4
Wreck Chance	20
Armor
light ceramic armor X2
Weapons
heavy recoilless cannon

The only difference between this and the Zulu is the better weapon. Thus, like the Zulu, this ship is not particularly special, except for being fairly hard to kill with lasers.