This is the first quest that you will receive when you begin the Wrath of the Druids DLC. To begin, speak with Azar, a trader from Ireland, who can be found at the docks in Ravensthorpe.
How to Complete Irish Trade: Destroy the Naval Blockade
Once you’ve spoken with Azar at the docks in Ravensthorpe, you’ll be tasked with destroying a naval blockade at the mouth of the Nene River, located northeast of Ravensthorpe. You can get there easily by sailing your longship up the river. When you arrive, you should initiate a raid on the blockade so that your crew can join you in the assault. They’ll help to burn any structures and lift the blockade as soon as possible.
Once you’re in the blockade, you’ll find a number of carts with explosive fire pots on them. Use Odin’s Sight to highlight them, or your raven to get a good overview of the area. All you need to do is destroy the carts by firing at them with your bow, or throwing torches at them to ignite the fire pots. In addition, you’ll need to destroy a number of structures such as houses and stables. All of the destructible structures will be highlighted when you use Odin’s Sight.
There are two areas of the blockade that you’ll need to destroy, broken down into North structures and South structures. Once all of the carts and structures are destroyed or burning, the task will be done and you’ll need to return to Azar in Ravensthorpe to complete the quest. You’ll find Azar in the east of the settlement, outside a tent which will soon become a new trading post known as the Irish Outpost.