Neither does man have gills for living in a water environment; yet it is not sinful to explore the depths of the oceans in search of food or other blessings.
There was great leadership in this country at the time of World War II. There was also unrelenting resolve at home, in America's factories and on the farms, in the cities and the country.
The great difference between voyages rests not with the ships, but with the people you meet on them.