The terminology and methodology can be a little confusing, so here's a few basics. The two judges will project themselves onto the race boats to keep abreast of the action and what rules may apply. In the case of the first video, featuring Anna Tunnicliffe entering from the committee boat on starboard and Dave Perry coming from the pin end on port, the female voice is speaking from Perry's perspective, while the male voice from Tunnicliffe's POV. The intermittent radio transmissions are from the wing boat, usually reporting on whether the trailing boat has an overlap on the lead boat. The wing boat will also relay, especially when the two competitors are spread apart, whether one boat is hold its course or turning. The word "give" is often used to indicate which boat is the give-way boat. "Windward give" for example would indicate a boat that is to windward and must avoid the boat to leeward.