From YPPedia

Subscriber oceans

Midnight Ocean
Cobalt Ocean

At the current time, the Cobalt Ocean map is identical to the Viridian Ocean map. They'll diverge later. As always, comments are welcome. (use this thread)

Route difficulties are under discussion in this thread.

Maps with commodities, maps of ice, larger icons, custom maps with tricked out wheels, spoilers, and tinted windows... coming next time I need to avoid study. :)

Dubloon oceans

Viridian Ocean
Sage Ocean
Hunter Ocean
Opal Ozean