ocean sound inside sub

[frau kaleun]

In my experience it's not unusual to still hear some "ocean" sounds when inside the boat while running on the surface, however if you are hearing the same "full on" sea/wind/weather sound fx inside the boat that you can hear when up on the bridge with no noticeable difference - yes, that is a known stock game bug. From the GWX manual:

You should hear the whistling from high winds only on the bridge; however, you can sometimes hear it at every crew station inside the U-boat, even when you are submerged. This is a known Silent Hunter III issue with some sound cards that you can usually alleviate by using the Windows Control Panel (Sounds and Audio Control panel) to reduce by one level the degree of hardware acceleration used by your sound card. Failing that, you can correct the problem at least temporarily by saving your game and then exiting and restarting Silent Hunter III.