The Isle of Man's concentration of Royal Navy captains

What contribution did the Isle of Man make to the Royal Navy during World War II?

The recollection is that many Manx people joined the war effort and that the island produced an unusually high concentration of Royal Navy captains, behind only Cornwall in the cited comparison.

The Isle of Man's contribution appears to have come through people rather than a major Royal Navy yard. The recollection comes from a reference book that grouped notable World War II captains by place of origin. It credited the island with an unusually high number of captains relative to its population. Cornwall was remembered as the only part of the United Kingdom with a higher concentration, so this remains a recalled comparison rather than a verified count.