EE HAD TRANSPORTED ANOTHER EE FROM THE DREDGE TOTHE POND DOCK BY BOAT. DOCK ROLLED OVER AND EE JUMPED INTO THE BOAT. BOAT TIPPED FORCING EE INTO WATER. EE THEN GOT BACK ON SHORE AND FELT A THR OBBING PAIN IN LOWER BACK & TESTICLE AREA A FEW HOURS LATER.