I think it's interesting that Stan says "most of my old shipmates seem to think that it was used at both capstan and pumps" but refers to the tune used by Llyod as a forebitter only, because it lacks the all-hands-in chorus. Why if Bert was his source wouldn't he include the standard chorus Bert uses.
As I said on an other forum, Stan stated "Another tune very popular with Liverpool seamen" I think before implying that Stan could be lying, on public forums, it might be worth doing private research.I think trawling for information on public forums, is convenient,but not if it involves possibly impugning someone.