Items, NPCs, quests, objects and spells of patch 1.12.1, read live from the realm itself.

Deckhand's Shirt

NPC	Level	Zone	Chance
Southsea Cutthroat	14 - 15	The Barrens	4.10%
Southsea Privateer	14 - 15	The Barrens	4.10%
Southsea Brigand	12 - 13	The Barrens	3.88%
Southsea Cannoneer	13 - 14	The Barrens	3.88%