I got a little bit further , but still stuck !
Looks like I have the shields aligned correctly
spoiler: Indy mentions they work like a wave,
and also the steam puzzle seems correct
spoiler: The holes in the wall sound like POOOO POOOO POOOO
but the font with sea water may be lacking something ?
The clue mentions
spoiler: morning mist ,
but not sure if the font with sea water needs anything else ?