Hi drdave
We have done this trip the opposite way this year. Left Abrolhos in May and just getting to Hervey Bay later this week. We have diesels but had no problems with getting petrol (for the dinghy) along the way.
You should have no problem with
fuel procurement from
Queensland to Darwin, into the Kimberley you may have to plan it a little more.
Obviously it'll depend on how much you carry and how much you sail.
Some of the places I know you can get both fuels are Broome, Dog Leg Creek, Kalumbaru, Wyndham, Darwin, Nhulunbuy, Weipa, Seisia and Cooktown. Most of these places we had to Jerry can it. There are some communities across the top that will also sell you
fuel but you may need to get permission to go ashore first. Maningrida and Galiwin'ku are two.
We used about 320l
diesel and nearly 100l of petrol in the
dinghy for 7 weeks though the Kimberley. We had no
wind for about 18 days. You can go up a lot of long rivers in the Kimberley and there are so many creeks and art sites to explore. I had to ease the
dinghy trips in the last week.
You also have to plan all your passages around tidal flow, it can often be 2-6kn. Most days we would only travel for 6hrs ( one tide) and stop and explore.
It was a lot of fun and we're looking forward to going again in a few years. Highly recommend it.
Stefan
PS lots of crocs!