Events from this point on happened much quicker than I can recount on the written page.  I heard a rush of high pressure air into the system, then a bang which sounded suspiciously like the toilet seat lid exploding open, then a blast of water (I wish) geysering into the head.  Next a heavy spray of, dare I say it, shit, blew into the valve compartment, quickly filling Captain Sivo's shoes.  The stench was overwhelming.  "I'M GOING TO PUKE!" I yelled as I desperately called for the plumbers to cease pressurizing, and tried to rescue the shoes.  The bilges quickly filled with the contents of the holding tank, and the walls of the head and shower were covered with nearly a week's worth of thoroughly digested meals.  We did what we could to clean up while the erstwhile repairmen called in for backup and beat a hasty retreat.  Sivo did the most bailing, like all good captains willing to go down with the shit.  I jumped off the stern for a bath.  Shortly thereafter a second speedboat arrived, with two highly (as it turned out) experienced and skilled rescuers, with a large supply of bleach, Lysol, and other cleaners.  From the leader of this crew, Boots: "Lotsa shitty mess here."  But they did a wonderful job, and left with some of the remainder of our massive beer supply.