MolAce vin tracker only works for cars that are on a Mol Ace branded ship, which is the common ship for Perth/Fremantle. Canberra cars tend to come via Armacup who don't have a vin search tool - it's a pity but is what it is.
RAVs only is a point in time database for when the ship enters Australian waters or docks. I don't think it says what ship its on either
The only way you can guesstimate is when the vin was released and it's first assigned EDD which might match up with an Armacup ship arrival date. It's tricky when there are 2 armacup ships in a week and harder to tell which one it's on
14-31st could be Grande Mirafiori which I think does have a vin checker as it's not an Armacup ship or could be Turandot maybe
I think this is the vin checker for Grimaldi (Grande ships) can you try it out for me with your vin?
GNET Grimaldi Corporate