Minor graphics glitch - Any Ideas?

[SeaWolf U-57]

The strange white darting items you see running across the sea
Just under the horizon are normal they sometimes happen in my
Own mods as well.
If you look at the ocean around your sub you should be able to see white foam showing sometimes on the waves ….when this happens far away from the sub it sometimes shows when looking at certain angles like what you are seeing near to the horizon.
The second problem of the reflections is stranger ..but if you think about the amount of graphical information being processed in the screen shot you are showing especially with the flags showing as well it maybe making your graphics card lag slightly.
I remember not so long ago I brought a new graphics card thinking it would improve the performance of the game ..it didn’t the screen stuttered and all kinds of problems happened.
I cured that by throwing that card in the bin and going out and buying 4Gb of ram and a Geforce 9800Gt card that sorted that

Edit i do see somthing strange the the second set of pictures ...the last time i went there Southampton was spelt like this not Shouthampton