fig6 illustrates discharge of the water from orifice 26 into funnel member 46 it will be recognized that although the illustration of fig6 indicates that registration arms 34 36 have engaged the alignment pin 52 it is preferred that the registration arms 34 36 do not operate to engage the upper alignment pin 50 or 52 until the lower chamber has substantially or completely discharged all of its water into funnel 46 this timing is preferred in order to decrease the overall energy required for operation of the system furthermore brake 42 does not engage the vessel 20 until after registration of the vessel by operation of the registration arms 34 36 fig7 illustrates the flow of water from vessel 20 for the wave crash effect the water discharges from opening 26 in the side wall of vessel 20 into funnel 46 which has an opening near its lowest point that directs the water onto transparent plexiglass top wall 55 which in turn directs the water onto artificial rock wall 58 spray from the rock wall is thrown back toward observation point 60 transparent plexiglass side wall 57 prevents water from splashing on people observing the special effect located at observation point 60 the sudden flow of water from the orifice in the vessel 20.