Report New toy in Auckland... in Marine Talk Posted 18 hours ago On 4/12/2020 at 11:44 AM, Steve said: Yachts with movable ballast, in the form of a canting keel or water ballast, may move that ballast to increase or decrease weight, or to change trim or stability. This changes rule 51. So are those pogo type keels canting fore and aft, movable ballast, or not? They still meet stability requirements "canted aft". It tends to be the pt. stb. canting boats that get into trouble when the mechanism breaks or they fall off. Altering trim by moving it back seems to be allowed. Maybe rules got left behind by technological development again.