What is stopping IPACS from adding aircraft carriers? After all, it features airports, grass strips and helipads!
IPACS can no difficulty in adding ships, as seen below:
This is the interior of one of the many cruise (and cargo) ships near Boeing field (Therefore rendering performance is good)
The aircraft carriers can be added with great textures and geometry, considering the number of ships and cranes with complex geometry and HD textures are present near Boeing field.