To plunter a merchant ship, you need a Privateer's License and 5 Stamina.

Privateer's License has 1 - 3 Classes,

and each class allows you to plunder different levels of merchant ships.

3rd Class Privateer's License: Lvl 1 - 10 Merchant Ships

2nd Class Privateer's License: Lvl 11 - 20 Merchant Ships

1st Class Privateer's License: Lvl 21 - 30 Merchant Shipts

When you successfully plunder a merchant ship, you will obtain Trade Goods.

Icons on top of Merchant Ships show what kind of Trade Goods they are carrying.

When you successfully plunder a merchant ship, a glass bottle icon will show up in the lower right screen.

Tap the glass bottle icon to view details.

The trade goods you win after plundering a merchant ship can be viewed at Storehouse in your Territory.

You can sell the trade goods to earn Silver.