1961-4 – Alvin Submersible – Harold Froehlich (American)
1964 – Alvin Submersible by Harold Froehlich – General Mills/Litton Systems. Image source: Manned Submersibles, Frank Bushby, Pub. 1976. In-depth innovation. The first submarine to explore the deep-sea wreckage of the Titanic was designed and built by General Mills. The “Alvin” submarine – named for famous oceanographer Allyn Vine – became the world’s premiere deep-diving research vessel …
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