Am going through process at present having a 25ft boat sent from West Aus. You should be able to fit her on a Flatrack oversize.Aus has a FTA agreement with Thailand for what its worth so 7% VAT is what you should be getting charged but as others have mentioned that is not necessarily how it will go down. In principle it is an easy process. The main problem you will have apart from customs mafia is dealing with the Import/Export brokers. They are at best economical with the truth and love to spin all manor of charges as am finding out. Have just had one quote come in at 13k USD which is well "hilarious". If anyone knows of a decent import crowd please do PM us. Good luck if your going to proceed and sharks be everywhere.