(REQ) Wind gauge on the watch tower?
 

Not sure if the game takes into account the wind strength and direction on your speed, but if it does, a visual representation of the wind's direction would be cool on the watch tower.

I mean a little one, nothing that raises the sub's surface profile. Maybe a little flag or wind tube...or whatever they had in those days that could flap against the direction of the wind.

Something small like a pennant hanging on the radio wire would be cool.
It would be neat to see it just dangling in the breeze when at all stop on a calm day, or blow off in a hurricane!

ya that would be great. I just wonder if its possible to correlate the wind direction/strength with that sort of animation.

I dought it, or the flags on shipd wouldn't wave under water. If what we want is possible then someone would have fixed the flag problem long ago, I'm affraid.
But if it is, it'd be great!