It wouldn't be wise to sail to Bergen. It's true that the wood could be sold in Berwick for a small profit, but there will not be enough merchants in Bergen who would be interested in your wool.
You've spent all your money on your cargo so you need a trade.
Bruges is a major port in Flanders, a region well-known for its fine cloths. Its weavers create the most delicate embroidered linen in the whole of Europe. Their designs are very fashionable among the wealthy in Scotland.
Which card will you play?
Actually, once you've had a closer look at the boat, you don't think a boat trip is really what you'd like to do. You're not scared of course, but some of those sailors really begin to shake when you mention the word 'pirates'!