What happened when there was no wind

There is nothing specific in chapter 6 about no wind other than the boat would not be moving very fast. The sailors are hoping for favorable winds.

You, Livesey, are ship's doctor; I am admiral. We'll take Redruth, Joyce, and Hunter. We'll have favourable winds, a quick passage, and not the least difficulty in finding the spot, and money to eat, to roll in, to play duck and drake with ever after."