INFORMATION:
The Blister hangars look like replacements for the original hangars and have been slightly re-aligned?

Above : a plan of the area the Blister hangar is situated. First 47/4 fighter blast pen, 46/3 Blister hangar (over type), 45 radar workshop, 23/7 transformer plinth.7

Above : dispersal pens for fighters type B FCW4513 with a shelter for 25 people.