Curious relative the surveyor's determination that the breaker must be within 3 feet of the inlet. The spec sheet for the Blue Seas surface mount system says it meets ABYC E11 standards when used with an ELCI Main Circuit breaker and mounted within 10 feet of the shore power inlet. Do you know why your surveyor is requiring the breaker to be within 3' of the inlet?
In my case, the existing breaker box is almost the same size as the Blue Seas box. So, size would not be an issue. I would be wanting to locate a replacement box in the same location, which, I'm guessing would be within 10', but certainly not within 3'. Existing box is right on top of where the old original fuse panel was located, forward in port lazarette.