Main engine to empty the bilge

I love my Vega.   I flooded the bilge today (deliberately) with a fresh water hose.   It seems counter intuitive to fill the bilge all that nasty water inside the boat.   I started the engine first time  it works like a charm.  With a flick of a couple of valves the water is drawn not from the overboard intake but the bilge its self.  .   The water from the bilge is quickly spat out the back cooling the engine as it go's and allowing an engine to be flashed up on the hard.   It runs  great and all the gages could be checked all prior to a launch.   This also confirms significantly  that my main engine can be used to empty the bilge in a very powerful way during an emergency.   I really respect those Swedes designers.  Every boat should be capable of doing this.  Sincerely John