RedactedNarrative: On 8/7/2021 vessel 2 was racing in the Eggemoggin Reach Regatta under sail at approximately 4.5 knots. As vessel 2 began a new tack, their course crossed with that of vessel 1 which was idling along the coast of Deer Isle near Poplar Point, watching the regatta. 
  
  As the two vessels got closer to one another, vessel 2 began hollering towards vessel 1 in an attempt to get them to notice their position, and move out of the way. Vessel 1 was off the port side of vessel 2 at this time. The two vessels got progressively closer to one another with no course change from either vessel.
  
  When the vessels were less than 10 feet away from each other, the operator of vessel 1 noticed vessel 2. As a reaction, vessel 1 turned hard to port and accelerated which made the stern of vessel 1 swing out to the starboard side, toward vessel 2. This caused a collision between the two vessels around the port midship of vessel 2 and the starboard stern of vessel 1.
  
  33 CFR 100.120 should be noted in reference to this accident. The Eggemoggin Reach Regatta is a registered USCG event in which "Spectators or other vessels shall not anchor, block, loiter, or impede the transit of event participants or official patrol vessels in the regulated areas during the effective dates and times,...". Also, "For all regattas and boat parades listed, spectator vessels operating within the regulated area shall maintain a separation of at least 50 yards from the participants."
  
  Vessel 1 did not comply with 33 CFR 100.120 by impeding the transit of vessel 2, as well as not maintaining a separation of at least 50 yards from vessel 2.
  
  33 CFR 83.08 should also be noted in reference to this accident. Vessel 2 noticed that their course would place them close to vessel 1, and did not take action to avoid the collision.