[REQ] Fogged up scopes

[raymond6751]

Here's a challenge for all modders. Can this be done?

"We went back down to wet the scope, now hopelessly fogged, and Caverly called the bearings of the freighter's propellers as she closed.

Both the surface mist and the fogging of the periscopes had resulted from the very cold water and the moist summer air here in the northern Yellow Sea."

from Clear The Bridge by Richard H. O'Kane

This would be "cool" to have in game.