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Wait - didn't the Japanese have long range sea otters with groundhog hangars behind their conning towers? In the stormy north Pacific, the ride is much less nutsack-shrinking two hundred feet down. A fleet of these could have devastated the west coast. Good thing they didn't think of it!
What is this...No, no, NO!!! The Japanese used inflatable groundhogs with underslung nutsacks which relied on high-altitude jetstreams to carry the groundhog over US territory. Accuracy was atrocious and the weapon system had virtually no impact on the war.
I think not too. Thinking is overrated.I think not!