I friggin' LOVE Diluvion's OST and I also absolutely adore Sunless Sea for how rich in narrative it is. I saw the "Adventure" trailer for Diluvion and immediately fell in love with the music. I felt the adventure theme was too short though. So I cut together my own high sea's adventure theme. I hope you enjoy!
Copyright to their intended owners:
"Diluvion Trailer 2 - Adventure Trailer" (c) Arachnid Games
"Diluvion" (c) Arachnid Games
"Down to a Sunless Sea" (c) David Hirschfelder
"Ocean Waves" (c) Mike Koenig (Sound Bible)
"Beach Waves" (c) Mike Koenig (Sound Bible)
You can find the rest of my music on https://soundcloud.com/pentazer