RedactedNarrative: On June 21st, 2021 at approximately 1334hrs 7-1 (Yankton County Dispatch) was notified of a person with a possible detached thumb located at the Marina of Lewis and Clark Resort. WCO responded to the area from the city of Yankton. A ambulance and a 7-1 unit was closer and responded to the site. When the WCO arrived on scene, it was stated that an accident happen with a young man while trying to tie up a boat to a dock. The information the WCO then received from O1 and another witness was that O1 of V1 was docking the boat to a dock at the Marina of Lewis and Clark Resort. As O1 was maneuvering V1 to the dock, P1 had the docking rope tied up to the V1 cleat of the Star board Stern area and holding onto it. The tail of the docking rope fell into the water while the propeller was still in motion during docking operations. The docking rope got caught up into V1's propeller. Rope tightened up and pinned P1's both left and right thumb in between the V1 cleat and docking rope. P1 screamed for help. O1 and other occupants reacted. O1 was unsure if the V1 engine shut off before or after he shut off the ignition key during this time. P1's left and right thumbs were pinned into the cleat with the rope, partially detaching P1's left thumb. With the rope being wrapped up into the propeller very tight, P1's thumbs were pinned into the V1 cleat. A knife was obtained from V1 by O1 to cut the docking rope freeing up P1's left and right thumb. Occupants of V1 administered first aid to P1 while calling 911. 
  WCO briefly spoke to P1 as he was ready to be transferred to the hospital. O1 was later contacted on June 29th, 2021 to verify the incident. O1 stated he was a very experienced boat operator. O1 knew P1 was assisting with the docking of V1. O1 observed P1 tie up the rope to the V1 cleat, but did not see the rope fall into the water from P1 that got caught in the V1 propeller. Nothing follows.