Tried to open the locked Wooden Trunk at the small beach next to the nautiloid. Couldn't pick the lock although my dice role with the added bonus reached the difficulty.
Lock Difficulty: 5. Dice Role was 1, but I had a Dexterity Bonus of +2 and a Sleight of Hand Bonus of +2. This would sum up to 5, but the bonus wasn't added to my dice roll.