April 1946 was the time this issue of Doc Savage came out. ( I am reading the Bantam reprints with the incredible covers.)
This issue is really odd. To me Doc Savage is adventurer of wild new land, super new science weapons, and evil that must be beat.
This time Doc doesn't even show up till the story is half over. No weapons of annihilation, no strange lands, just a boring sea and some half ass pirates.The only twist the pirates uses submarines instead of ships. No wonder why Doc Savage folded.
This story was dead before the fifth chapter. Not recommended at all.