should explain that many of us chief engineers at sea would start to build engines then leave them behind for the next guy when we went on leave etc , this is one of the few I completed since I was aboard for 10 months at one stretch( plus being on salvage station waiting for bad weather and some poor sod to get into trouble is the most boring pass time imaginable) and the only one I took home for some reason, probably because we docked at Holyhead which is only 20 miles from my home