Ferry from Tahti to Rangiroa?

As I might have to take a kayak or dinghy from Papeete to Rongiroa I would like to know if there is any ferry between the two islands, evt. timetable and price.

It's about three hundred miles. There are freighters that make the two-day trip, but space is limited and trips are not regular, so you should plan some delay.

douglas in sf