Definately not a Shetland I was involved with them from day one.

Whilst it looks like an early Microplus it is in fact a Camargue 16 built by a firm called Beavis Marine of Tollesbury in Essex. Here's the tech.spec.
length 16'
draft 9"
Max. headroom is 4'
Height above waterline is 5'6" (inc. screen)
Weight is 550 Lbs.
Maximum outboard is a 50hp.

Hope that helps. From the photos it looks to be in remarkable condition considering she was probably built in about 1972