Sub Division

The Una class has been accepted by several nations as the quick build alternative to our morphing submarine. Satellites have made subs more important. If the images were available to U boats Germany would've sunk everything.

Things can be hidden on the ocean floor, for those concerned about nuclear destruction, however they need to be small & for best have an angular form. Estuaries & shallow seas are better defended since these posts, we love defence.

The light blue areas can be dominated by shallow depth subs.