Full list of all 15 Don't Sink achievements worth 1,000 gamerscore. It takes around 1-2 hours to unlock all of the achievements on Xbox One.
Built Crampton to completion starting from nothing.
Captured and owned 6 islands at the same time.
Captured an island!
Defeated 25 pirates at sea!
Purchased the Man of War.
Purchased a better ship.
Spent 25,000 gold!
Completed a sea voyage that was at least 2,000 miles in distance.
Completed at least 50% of all available quests.
Traveled a total of 20,000 miles by sea.
Tried to capture the ferret captain!
Completed a sea voyage that was at least 1,000 miles in distance.
Completed the side quest, "Tough Decisions"
Begun your journey!
Lost to the seas only you could find him