Answer:
1000 m NW of its original position
Step-by-step explanation:
If the sailboat makes a right turn after drifting 600 m west, it'll be going north then.
Its distance from its starting point can be found using the Pythagorean Theorem:
d = √( 600² + 800² ) = √1000² = 1000
The sailboat will end up 1000 m from its original position.