The exact value will depend on the condition and fittings of the sailboat. It could easily reach 8 or $9000. An experienced marine surveyor would be the best person to appraise the value.
8 knots on the good days.
Depends if you put it on an 8 foot skiff or a 40 foot barge.
26.7 mph
It all depends on how fast you are going.
973 kts or 1120 mph
8 and 2/3 mph
You are averaging 96 mph at that rate.
If the surface of the water is smooth, and you are on a beam reach or broad reach, you may get as much as 8 mph out of your small craft. CAUTION: If the wind is gusting, you risk a knockdown.
It's Distance/Time, so 8/1 is 8. So it's 8 miles per hour. That is the average speed.
Foward
This is my calculation: 8 min & ~19-20-25 (for different approximations) seconds.