[FA_Cheech]

As far as my research shows movement for vehicles and ships is controlled by ed_map_t.tga. This is essentially a copy of map_t and seems to define land and water for moving objects. Not all maps appear to need it, but my English Channel did, and so does my current map.
Joe

Joe, for The Slot, Skunk had to build us an ed_map_t.tga, in order to properly define the "navigable" waters on our maps. This was critical to ensuring that players would be able to place moving ships in the narrow channels near Kolombangara and Munda.

With all the naval gunfire support that occured in these areas, it was a "must". If memory serves me correctly, I think he also had to change the "reef depth" on the map_c.tga to ensure that moving ships would have enough "water under the keel" to allow then to transit narrrow channels.

I suspect the problems Boris is having are indeed related to ed_map_t.tga issues.