The LCVP was rated for a 6,000 lb vehicle, roughly 1/10 of the weight of a Sherman.  I suppose you
could dismantle a Sherman, then load into 10 LCVPs  

  I don't want to be the guy trying to fit Tab A
into Slot B on the beach though.
     You guys must be thinking of an LCM-3 that could carry one Sherman or 60 troops..was quite a bit 
larger than the Higgins boat.

