RedactedNarrative: Vessel 1,2 and 4 experienced engine failure due to operation through mud and gravel.  Vessel number 3 took vessels 1,2, and 4 in stern tow.  They attempted to go up stream to their launch point.  Vessel number 3 was not capable of towing all vessels and occupants in current. 
  Operator Number 3 shut down vessel 3, so all 4 vessels remained tied together and were drifting down stream in an attempt to drift the 4 mile down to an alternate take out location.  All 4 vessels while still tied together drifted into a bridge pilling and became entrapped causing vessels 1,2, and 4 to be swamped and sunk.  Vessel number 3 was swamp and entangled on a branch.  All occupants left their vessel and swam to shore.  All 4 vessels were later recovered by ODNR officers.