The loading and pseudo-solidification can cause residual internal stresses that change the dynamic response so that a small signal input gets a big change as a

The loading and pseudo-solidification can cause residual internal stresses that change the dynamic response so that a small signal input gets a big change as a result. I'd imagine that the exact values are not monitored, so that what is written as "in the hold" and what is actually there are subject to natural variation, which can be asymmetric, and thus theory and practice are not the same thing. If seawater gets into the mix, it will have more water. There are thermal phase changes in the liquefication. It can behave very differently at 10 deg C warmer than one expects from 0 deg C warmer. Over a relatively long trip, with agitation, the mean particle size is going to change. Big particles are going to break into smaller particles. This is going to change the liquefication physics.