[Low-Tech] Boating vs Shiphandling

[Humabout]

After rereading the two descriptions, I don't see Seaman applies to small craft - although if it did, it'd make life easier. Boating looks to include Seaman and Shiphandling, where for large vessels, the two are split. Boating does mention that you use Crewman/Shiphandling split when the vessel's "bridge" requires multiple crew and a captain:

Originally Posted by Basic Set, p. 180

For large vessels that require multiple crewmen on a "bridge," use Seamanship (see Crewman, p. 185) and Shiphandling (p. 220).

Perhaps that is the simple dividing line: when bridge duties get split among multiple people. Perhaps Crewman represents working together and following orders as much as anything. I'm really not sure and am largely just babbling at this point. I'd be curious to see a Krommunication on this matter.