Cross sailing is sailing towards the wind.
Sailing down wind with the sails fully open or 'gull winged'.
Wind powered (i.e., sailing) vessels.
sailing, wind power, wind chimes
In the old days, it was because there's not much wind near the equator, and what wind there is always blows in the same direction, so sailing ... with actual sails ... can be tough. None of that matters any more, now that they don't have to depend on the wind to take them where they want to go.
You may mean "By and Large" - meaning steering a course as far downwind as possible, keeping the sails full and the boat speed up. The answer above is completely wrong. One cannot sail both by and large at the same time since they mean opposite things. Sailing by the wind (i.e., sailing by) means sailing as close to the wind as possible. In other words, sailing into the wind. Sailing large means sailing before the wind. That is, sailing with the wind blowing from the aft quarter. So it is impossible to sail both by and large at the same time since that would require sailing in two opposite directions at once.
a boat a sail and the wind
windsurfing and sailing
The best point of sailing is 45 degrees to the wind. If the wind was over the beam you would have to take a port or starboard tack to it.
Lack of knowledge (NO maps) Lack of protection (NO Naval escorts) Lack of wind (NO wind, NO sailing)
Usually, this act is called Beating or sailing Close-hauled.