Subs for economic warfare?

[PJNagrom]

I think they left the power of subs a little short in the game. How about the economic warfare side of subs?

If you park a sub within a square or two of an enemy city they should take a hit to there trade routes. Maybe lose one whole route or suffer a point on each - something to make me want to field a wolfpack.

You would get a note each turn alerting you that X city loses y $ due to sub attacks. Then you'd need to field some sub hunters to clear them out.

Maybe give them a stronger first shot? Sub warfare was huge for a time yet they never really get a fair shot here.

There has to be more to it than delivering a spy...

[Bill3000]

[quote
If you park a sub within a square or two of an enemy city they should take a hit to there trade routes. Maybe lose one whole route or suffer a point on each - something to make me want to field a wolfpack. [/quote]
Well, if you are at war with that Civ, you will prevent production in more than just one tile if you have a ship in the sea area of a city radius. I'm pretty sure that's the intention for blockades in Civ4, unfortuanatly.

[Jaybe]

Even if you are at war with the civ, blockading a port's sea tiles does not hinder their Trade Route income, even with surface ships.

Disappointing, but true.
Per spy intelligence after port had been blockaded from previous turn.

[MasterDave]

I like this idea, it would give players reasons to build subs and more destroyers for ASW purposes. Right now, subs are sort of a red-headed stepchild and I rarely build any.

[Urban Ranger]

If you run Mercantilism you aren't getting any foreign trade routes anyway. Besides you need wolf packs for this to work, and they didn't operate anywhere near ports.