Sage's Skulls and Shackles
Garrick is an enigma. No known father, and his mother was a whore working the docks. Its possible his father is famous corsair or pirate, but its also possible that his father was just another bilge rat with a few coppers to rub together who sought some company while in port. Regardless, the sea has always called to him and he found work at the docks.
While working the docks he came in contact with sailors and learned the trade from them whenever there was downtime. Befriending some disreputable individuals brought him in contact with the seedy underbelly of a port city, and he quickly became a fixture at the local dives and dens of inequity.
A close call with death brought him a deeper respect for the razors edge between being dead, and the other guy going home in a box. Between the love of the sea and the excitement of the rough people of the docks, it was pretty obvious who was calling him. Besmara, the Bitch of the Sea had found a new champion.