Here is the full list of all 60 Man O' War: Corsair - there are Warhammer Naval Battles achievements.
Sink 50 ships.
Slay 5 sea monsters.
Sink 10 pirate vessels.
Sink a Galleon.
Sink a Greatship.
Sink a Warp-raider.
Sink a Doombringer.
Sink 10 Orc vessels.
Sink 20 ships.
Sink a Wargalley.
Sink a Wolfship.
Sink a Buccaneer.
Sink an Ironshark.
Sink a Corsair.
Sink a Deathgalley.
Sink a Drillakilla.
Sink a Bigchukka.
Sink a Hulk.
Sink 10 Dwarf vessels.
Sink 10 High Elf vessels.
Sink 10 Empire vessels.
Sink 10 Estalian vessels.
Sink 10 Kislevite vessels.
Sink 10 Skaven vessels.
Sink 10 Tilean vessels.
Recruit wizards from all eight Colleges of Magic.
Recruit an Amber Wizard.
Recruit an Amethyst Wizard.
Recruit a Bright Wizard.
Recruit a Celestial Wizard.
Recruit a Gold Wizard.
Recruit a Grey Wizard.
Recruit a Jade Wizard.
Recruit a Light Wizard.
Slay 50 sea monsters.
Sink 200 ships.
Sink 1000 ships.
Send a Bane Tower of Tzeentch back to the Warp.
Sink a Bloodship.
Sink a Deathburner.
Sink a Death Fortress.
Sink a Doomreaver.
Sink a Dragonship.
Sink a Dreadnought.
Sink an Eagleship.
Send a Great Winged Terror back to the Warp.
Sink a Hawkship.
Sink a Hell-hammer.
Sink a Hellrammer.
Sink a Hellship.
Sink a Hellslicer.
Sink an Ironclad.
Sink an Ironfist.
Sink a Monitor.
Sink a Nautilus.
Sink a Plaguecrusher.
Sink a Plagueship.
Visit every non-pirate port in a single campaign.
Sink 10 Chaos vessels.
Sink 10 Dark Elf vessels.