Certainly not the Isle of Man, they are slightly off to your left, and as the crow flies, they are only 66miles from the Great Orme headland, according to a friend who owns a yatch, moored in Conwy marina.
Cumbria is almost straight ahead, due North, and Blackpool is at roughly 2pm on the horizon, and the Isle of Man is roughly at 10.30pm.
The mountains i could see, were way beyond the Isle of Man, and behind Cumbria.
It was one of those perfect weather vistas, right cloud formation, crystal clear clarity after heavy rain, and in late Autumn when the air is getting colder.