The Waterborne Add-on for Tropico 5 has 10 achievements.
Have 1 of each waterborne buildings in a single playthrough
Have 5 superpowers in Offshore Offices
Have 10 Floating Apartments and no residential buildings on land (excluding shacks)
Finish the Waterborne campaign with the Black Pearl in your possession
Complete Waterborne campaign
Defeat Captain Plant in the final battle
Have 3 Oyster Farms and a Jewelry Workshop
Have a fleet of 3 Fishing Trawlers
Complete "Treasure Hunt"
Fire missiles from a Nuclear Submarine during a battle against another player