1) The game scene is set on a pirate ship in the Caribbean, and the developers aimed to immerse players by only including ambient sounds of the ship rather than music. They likely achieved this by physically recording ship parts moving and manipulating the sounds in software.
2) At different points in the scene, the mood shifts from calm to threatening to conversationally calm. Background noises were added to make a character seem more scary, likely using manipulated violin sounds.
3) As a 1700s RPG, common sounds would include weapons, carriages, and ships. In this scene, only ship sounds were included. The developers physically recorded ship movements and edited the sounds on software.