I was just experimenting while heading out to my new patrol area in the North Atlantic, with "Decks Awash" settings. First of all I discovered that the Decks Awash depth can be adjusted on the page activated by clicking the microphone icon, by rotating the mousewheel over the number. Changing it to 8 meters resulted in no bow spray and minimal wake when using best economy speed with only a loss of about a half a knot compared with running surfaced. Good for a quick escape if traveling through air patrol zones while running on the surface during daylight. You need to partially surface until the watch crew are on the conning tower then go to decks awash if you want extra eyes on the sky
