Thanks for the compliment.
I plan to have the sail up, oars inboard, and rudder rigged/in place. My speculation is that this would be the scenario where the boat is on its way to where the whale is located or possibly returning to the ship from a distance. From what I have gathered from the book with the kit, oars and the steering oar would be used to approach their target. Once the harpoon is set, the line would run out, oars would be brought inboard, and the steering oar would be used due to the much greater steering leverage it would have over the rudder.