They were craftsmen!!

A fast motor torpedo boat under Inspection in W.W.2 in the shed near the folly now part of Cook's housing complex. The yard the belonged to Vosper's of Portsmouth who came here in 1941 as well as building they also repaired a lot of boats that were damaged during the war.
225 Men worked here then, The firm stayed here until 1946 and in 1947 the Yard was taken over by James W Cook of London.
 the MM.T.B.RML 547 in the shed is there for inspection after running aground.
Vospers built 16 MT B's and two high speed rescue launches for the R.A.F  while they were in Wivenhoe