wasn't it common practise to show the actual waterline with an black line on the drawing?
If it is decided that I should do so it will be done. I will post a version with the black line to make everyone happy. The reason I did not and instead placed blue lines is because the waterline differed depending on the amount of consumables on board and the typical line was actually around two feet or so below the red and grey boundary.
well, that is exactly the reason why I always include that black waterline: it shows the waterline but it not dependent on the boot topping or the waterline markers. that said, you may do as you wish, as it seems there is no standard way of doing it.