Boat prices

I was looking at the boat prices and noticed that the river boat was twice as expensive as the sailing boat, even though the sailing boat is larger and carries more weight. Now I don’t know squat about boats, but I’d think that a sea-faring sailing ship would require even greater technical skill to create. Is there something I’m not seeing that makes river boats more expensive, or is this a typo?

Wow, great catch.

The price is not wrong; what's wrong is the cargo capacity. The sail boat should be able to carry 400 stone, while the river boat should be able to carry 600 stone. It looks like at some point I transposed the values.

I'll update the Errata.