I'm Having a Problem Underwater
 

Whenever I look through the periscope underwater, or in external view underwater, It looks like this. Can anybody tell me why this happens?

I suspect either a dodgey install or more likely graphics compatability/drivers issues. Updated your graphics drivers recently?

Yup, theyre up to date. The stock version of the game doesn't suffer this problem, it's only when I enable mods/patches (not sure which one is causing it ATM though). I will probably enable one mod at a time until I find the culprit, but I was just trying to see if anyone had experienced this before.

Edit:

So after looking at this page (since I'm using DynEnv 2.9), http://www.subsim.com/radioroom/showthread.php?t=202520 there is a critical patch that needs to be applied if you use a high visibility submod of DynEnv 2.9. I use the high visibility mod since i'm a cheater :), and that causes the underwater particles to be rendered as square blocks.