That is what I meant to ask, do boarding parties need supplies or is it assumed as the combat is so much shorter it wont be an issue.
None of my test boardings ever ran out but don't think they were ever long enough
Ground units carry sufficent supply for ten rounds of combat -- whether those rounds are eight hours or ten minutes. Units that run out of supplies fight at one-quarter effectiveness.
And it looks like that at the moment units only draw new supplies from LOG units during combat, so they won't refill after the fighting stops.