RedactedNarrative: On June 10, a vessel (V1) was on Lake Oahe in Corson County, SD attempting to pull another vessel (V2).  V2 had become grounded on shore earlier in the day and was unable to free itself due to rough waves.  V1 attached a rope to V2 and tried to pull it back out to deeper water three times.  V1 was unsuccessful in freeing V2.  After the third attempt, V1 starting taking on water due to rough waves.   
  When WCO arrived at approximately 4:45 PM V1 had already taken on enough water that every wave was breaking over the bow.  P1 was attempting to bail water out of the boat, but the water was coming in faster than it could be bailed out.   
  
  V2 was able to be freed by pushing it back out to deep enough water, but V1 had flooded enough that it was determined it was not going to be able to be removed at that time due to high winds and rough water.  As much equipment as possible was removed from V1, but after a short time it was thought that V1 was likely a complete loss.