Very nice soundtrack, it has a lot of very interesting textures and sounds throughout !
Even with the minimalism of the ambient style, I felt that every track represented its story intent very efficiently (especially with the gloomy melodies in Mark... that represent very well this moment of the story for the protagonist).
I also really liked Nkumo Atoll, the style with the percussions and the track's progression was very unique and contrasted a lot (in a good way) with the calmer sailing tracks before.
Overall excellent job, congrats !