Nav Computer: Centre dot
on TAS (130 kts), rotate to put wind direction (190šT) on HEADING index and
mark wind on centre line 40kts below centre dot (over 90 kts).
Rotate to put track 003šT
next to HEADING index; read drift (2š right (Stbd)) and rotate to put track
(003š) under drift (2šStbd). On heading 001šT the drift 2šStbd will
give the required track, 003šT and the groundspeed is under wind mark: 170
kts.