I have just visited Nantucket Yacht Club and flown south into the next sim - Blake Sea - Atlantic - and can confirm Blake Sea - Atlantic is now on Magnum RC code. Edited to add this - I see from the map that it's not too bad, can still sail north then east then south and exit into Blake Sea - Galile providing that, too, isn't on Magnum RC! Of course, a Linden Protected sim being added to the West of Nantucket would fill in a gap and provide a third exit for Nantucket sailors!