Titles

With the release of Patch 1.6 player titles were included[1].

Titles can be rewarded for a variety of activities including Career and Epic missions and special circumstances.

[edit] A list of titles

Battle Worn Commander - Win or lose ten port battles
Shipwright - Construct a Ship (Upgrade Ship Types don't count)
Master Shipwright - Construct a Writ
Royal Shipwright - Construct an 'Invincible' First Rate, 'Prince' First Rate, or 'Couronne' Mastercraft Galleon

One of the reward choices.

Drunkard - gained from Fisto Inferno from the Tavern. You need to dice for it, so only one groupmember will get it.
Animal Tamer - gained from Beauty and the Beast. You need to dice for it, so only one groupmember will get it.
Riptide Mariner - gained from Cannons of Heaven and Earth. You need to dice for it, so only one groupmember will get it.
Prizefighter - gained from Fisto Inferno. You need to dice for it, so only one groupmember will get it.
Confessor - gained from The Dread Saint. You need to dice for it, so only one groupmember will get it.
Curiosity - gained from Beauty and the Beast. You need to dice for it, but may drop more than once.
Ain't Heartless - Tradable for Reclaimed Loot
Plunderer - Tradable for Reclaimed Loot
Redeemer - Tradable for Reclaimed Loot
Master of Disaster - Tradable for Reclaimed Loot

Brethren Enquirer - Pirate only Chapter 2 reward for completing all bonus objectives
True Brethren - Pirate Nation Chapter 3 reward
Counter Revolutionary - French Nation Chapter 3 reward
Hammer of the Saints - Spanish Nation Chapter 3 reward
Wolf Slayer - English Nation Chapter 3 reward

British/Spanish/French/Brethren Vanguard - Testbed event reward for testing Besieged Tortuga Missions
Conscript of Britain/Spain/France/? - Testbed event reward for testing the new Port Battle Maps in 1.19