To smuggle run from karamja you first must to buy the rum, and put it into the small basket near the dock. Then apply gor the banana gather job and collect enoug large amount of bananas to the box, until it's full (It's the same box where you putted the rum). When you are finished that, go talk to the banana guy again, and ask where those bananas go, and everything else too. when you are done, leave karamja. Now you will need a white apron. Once you got that, go to the food store (in port sarim) and apply for a job. He will ask you to go and tidy up the back room. Go to that back room, and loot the small box in there. You should find rum in there, if you have done this correctly so far. Now leave the shop and give the rum to the pirate.

You have the key he gave you. Use it to a chest in upstairs of blue moon inn (the one in Varrock). You find a treasure map there which says dig behind the bench in Falador park. If I remember correctly next will need to get a spade, you will get one from daynor's manor, from the kitchen, near the back door. Then go to falador, and use the spade to a flover behind the most southern bench.

If I remebered correctly and you did it right, You should now have completed the pirate's treasure quest


The quest doesn't end here, bu It should be easy enough to figure out the rest.