> Its planks are made of Pomeranian oak from modern-day Poland, and the wood of its frame came from the Netherlands.
I'm surprised the raw materials came together over such a distance. That transporting lumber was economical back then is remarkable.
Check out the History of the Germans season on the Hanseatic League [0]. The bulk goods trade was in the Baltic / Northern Europe was actually huge. The Hansa themselves traded all the way from London to Novgorod. Anyway, it's an absolutely fascinating subject and period.
You might be interested in tin transport during the bronze age then - You'll find tin mined in Cornwall in ships that sank off the coast of Turkey 3500 years ago.
https://en.wikipedia.org/wiki/Tin_sources_and_trade_during_a...
Well, as the article says:
> Per the statement, the large vessels were made to sail north from the Netherlands, around Denmark and toward the Baltic Sea. [...] Uldum adds that shipbuilders made the cogs as large as possible to transport bulky cargo, like timber
Once you've built one cog, you've got the ideal tool to fetch Polish timber to build more!