The change arises from differences in COVID-19 regulations on either side of the Irish Sea. It's something of a bravo move by ISORA chiefs aiming to keep channel racing going in a week that has already seen the Round Ireland Race, the highlight of the offshore calendar, fall victim to the pandemic.
28 boats are entered so far for the first offshore of the season over a course size of 55-miles, nearly double the length of recent coastal races.
ISORA's top prize for the famous Wolf's Head is decided over the best of five races but this must include three qualifying offshore races. These races are long offshore courses and traditionally cross channel.
Unfortunately, though, differences in crew number limitations, port access and difficulties with overnight stays onboard have all conspired to make it impossible to run a qualifying race which is equitable and equally available to all competitors.
The result is that Saturday's racing will be scored taking account of the respective fleet sizes in both races.
Given ISORA entries currently show only two Welsh boats entered, it looks like it will be a small race in Wales and a larger race from Dublin Bay.
ISORA racing in these difficult times has only been possible because of the association's investment in technologies which allow remote desk-top race management and as ISORA's Stephen Tudor told Afloat, [the association is] "Making the best of difficult times to get sailors on the water both sides of the Irish Sea!"
Saturday's race four consequently is a 55 miler, weighted 1.1. In Ireland, it will be a Dun Laoghaire offshore and back to Dun Laoghaire and in Wales from Pwllheli to Pwllheli. The course will be published by 1200hrs on Friday, 31st July. The forecast for Dublin Bay indicates more light westerlies that have been a feature of ISORA's 2020 Viking Marine Coastal Series thus far.