Plz Help

[caravel]

Welcome mason0226

Unit's don't actually enter ships. To send units abroad you just need a port from which to embark, and a ship in every sea zone between the source and destination provinces. Then you just pick the army up and drop it on that destination. If an enemy ship is in any of those sea zones you'll have to sink it first or your army won't be going anywhere. Also if you're invading the province of a faction you're not at war with you'll still have to sink their ships first before you can invade.

-Edit: Holding the 'v' key will show you the status of sea zones, whether neutral brown, friendly green or hostile red.