Victim 1 swam to vessel 1 and got onboard while the vessel was at anchor with other boats. 

Victim 1 started the boat and put it in gear causing it to run into other boats tied to the vessel 1. 

victim 1 was impaired by alcohol. Owner of vessel 1 told victim 1 to get off of his boat. Victim 1 jumped back in the water and swam for shore. Upon his swim to shore he began to struggle and another boater pulled him from the water before he went completely under. Victim 1 was transported to the hospital due to the near drowning incident.
Horsetooth Reservoir
Fort Collins                  