RedactedNarrative: V2 was transiting under the Cinco Bayou bridge, from east to west, at slow speed.  
  
  V1 departed from the south shoreline, west of the Seaway boat ramp heading out of the bayou.  V1 was attempting to transit under the Cinco Bayou bridge through the same span as V2. 
  
  V1 attempted to avoid a collision by placing the motors in reverse and turning hard to port (left).  As V1 turned hard to port, the starboard (right) side bow of V1 struck the pulpit of V2, and V1 then struck the concrete piling of the bridge.