On the Nav Computer: Centre dot on TAS 245kts, put the heading, 035šT, under the HEADING index.  

With heading 035šT and track 046šT the drift is 11š Stbd (right).  

Mark the wind vector where the drift (11šStbd) crosses the groundspeed (220kts).  

Rotate to put this mark under the centre dot and read the wind: 340šT/50kts.