What is the the FSMMT VMAX function for?


Question:

What is the use case for the function VMAX for the FSMMT command?

Answer:

MARPOL has a  requirement to load cargo tanks "to a level corresponding to the maximum combined vertical moment of volume plus free surface moment.
So VMAX was created to set tank levels to this worst-case load.  It could have been a LOAD command but it was so similar to the existing MAX function that is was added under FSMMT instead.