This was probably taken in an immediately post-war ML or yacht conversion. Note the nice roll-top desk, a doorknob on the after hatchway, and the extended ladder. Comparison with a photograph shot at a similar angle from an ML during the war shows a much simpler deck, shorter ladder (why waste all that extra wood for one extra step?) and no such hardware on the hatch.
This photograph is in my collection and was originally in Irwin Chase's personal collection.
