A friend recently flew Bangladesh-Bangkok after an hours delay due to torrential rain at Bangladesh. On arrival, her (canvas) luggage was completely waterlogged, and it appeared that everyone else's was too (including some cardboard bags in a rather sorry state!)
This sparked a few questions - are the bags or containers weighed prior to loading, or do you assume "average" weight per pax? And she reckons that her wet bag was probably 40% heavier

than it's dry weight, would this have been taken into account?
Just curious!