Marineville Tracking Station Z11 was a World Aquanaut Security Patrol base.
In early 2065, officials at Tracking Station Z11 worked "frantically" to determine the position of Titan's undersea cavern, where Stingray had been trapped (PROSE: Marineville Waits!) by Titan's monster jellyfish. (PROSE: Titan Declares War!) The only information the controllers had to work on were the few video-scan pictures received the day before at the Marineville Control Tower. A short article about this situation was featured on the front page of TV Century 21's 6 March edition. (PROSE: Marineville Waits!)