Marking the waterline

I have been thinking of bottom painting Xiao Feng for next season and when I pulled her out of the water yesterday I got an idea of how to mark the waterline easily. She has been in the water for just over a month so the unloaded waterline is already clearly marked on her hull, I just added a few marks along that line before cleaning her. When it is time for painting I just need to put the masking tape an inch or so above the marks (maybe a little more in the bow).

Marks

Cleaning of bottom started