Imperial ships are aquatic on the interior, owing to the aquatic nature of the manufacturers. For diplomatic purposes, as one of the few water-dwelling space races, they've found it advantageous to develop a wide variety of technologies to allow diplomatic and commercial intermingling with "drys". They have excelled in robotics to adapt to dry land, with their androids made their way through the markets as top shelf, even before the Black Year. The technology for the diving suits, for divers to come aboard their ships, is also for sale.

Their planet-capable ships can dive underwater to reach their cities, only some of which have ocean-top docks. They permit ocean-side tourist and resort settlements to be built, but monitor such locations closely for pollutants. They're very eco-conscious.

I'll compile the lore into the first post later.