Bjorn, I noticed that this word leidang is mentioned several times, but it isn't really described much more than being naval levies.
So I thought I would ask a few questions:
Is a leidang similar to the descriptions of Coasters/Keelboats? Basically a large catch-all for small row/sail-based vessels that are primarily manned by peasents, have poor seaworthiness and generally small cargos.