Wouter,

I didn't misinterpret righting moment and healing moment I deliberatly swapped one for the other. My understanding of these two is that while they have different meanings they are equal and opposite so one can't increase while the other stays the same.

I may have confused what Mary was saying and that is why I apologised to her in advance in the same posting.

Can you explain how RM and HM can be different.

All the best

Gareth