RedactedNarrative: The group was traveling upstream on the Missouri River on Operator''s boat.  Operator was driving and when they came upon a split in the river they chose to take the left channel.  By the time Operator realized the channel was to shallow the boat ran a ground.  When arrived on scene a complete boat safety inspection was done by Montana Game Wardens, and all of the neccessary safety equiptment was present.  Upon myself arriving on scene I witnessed a web shaped crack on the glass on the left side of the boat, infront of where the passenger was riding.
   
  A passenger in the front seat of the boat behind the glass windshield of the boat struck the glass in front of him.  His wife later reported that he sustained injuries to his vertebrate in his neck.