This simple application is showing Your "Velocity Made Good" (VMG) towards Your next WayPoint during Sailing Move. Since Your speed over ground "SUUNTO_SPEED" equals VMG only if You are heading directly towards Your next WayPoint, I have used 6 secs intervals to measure the "SUUNTO_DISTANCE_TO_NEXT _TARGET" to calculate the real VMG. Application display is alternating between Distance to next WayPoint(nm) and VMG(kn) every 3 seconds. Simple rule of thumb, if Your VMG is less that 50% of Your current sailing speed (http://www.movescount.com/apps/app42-Show_the_speed_as_knots) You should at least consider tacking Your boat. NOTE: For this application to work You need to set Your next WayPoint by pressing and holding "NEXT" button during Your Move. Comments and Improvement ideas are welcomed.