Falling temperatures where they are coming from, how well the food supply produced over the summer holds up and favourable winds are known factors.

When all the conditions are met, and there is perhaps a favourable wind, or a tailwind, then set sail.

The French would wait for a favourable wind and cross the channel quickly.

All the ships were to be ready to weigh anchor at a favourable wind.

In familiar water and with a favourable wind she was one of the fastest ships in the known world.

There were ships used for trade which with a favourable wind could rely on making six knots.

The cook stood up on the forward side, so that the shed protected him when there was a favourable wind.

By his reckoning he had a clear forty-eight hours, even with the most favourable winds, before another ship could take its place.

He'll be days yet, even if he's had more favourable winds than us.