There is no specific date
sailing isn't an olympic sport its a regular stupid sport like football
As with any other sport, if it is competitive sailing then to beat your opponents, in pleasure sailing then to enjoy yourself
The sport of windsurfing combines both sailing and surfing.
The sport of sailing.
Yes. Sailing could be seen as both. Yes it depends what part of sailing you do, if you take it competitively and race then it can be a sport (as it is in the olympics) or if you just cruise then it can be seen as a sport but it is more of an activity :)
sailing
Yes
The America's Cup is associated with the sport of sailing.
Yes.
sailing
it became a sport 2 days ago
1891