this units sees it as its duty to KEEP ANNOYING my fleet turn after turn! Each turn he sails around to wake up as many ships he can get to!
The same goes for land units, by the way. Why is this? Can't he leave me in peace? For this causes me to ponder the possibilities of attacking him.
I buy the bastard.
Seriously, I once had a massive oceanic blockade that I *had* to maintain, but I didn't want war and I got irritated by the snooze-button visitor. So I made sure to keep a Spy unit within easy reach of the outer part of the blockade. Presto-changeo. Doesn't work so well if it's stacked (or if it's a ship carrying any units).