Actually this is from Serge Robitaille, SV Spirare!

Summary

How to order the Saildocs GFS gribs to get the most from them. This includes, surface pressure and winds, rain and swell, as well as 500HPa contours. Serge on SV Spirare has skilfully put all this together and has made the 'gribs' really sing! Note that for those east of Vanuatu this is your only source of upper level data.

If you are familiar with ordering gribs skip to the numbered instructions below. Otherwise read on.