Fog Horns?

Would it not be possible for a modder to find a way to add Fog Horns for ships out at sea during stormy or foggy weather. The sound of them adds a creepy atmosphere to the game. I think during WWII even war ships would use them regardless of the U-boats since there was more chance of being in a ship on ship collision than being torpedoed by a U-boat. Besides if a a U-boat could hear your Fog Horn, most likely he could hear your props using the hydrophone. I know fog horns are blown when leaving port, but I wonder if they can't be implemented to surface ships once the weather gets severe?