Interesting stuff. Just as important to education as "how to make a car" was 50 years ago. Things not covered in this article: Expected carrying capacity? How

Interesting stuff. Just as important to education as "how to make a car" was 50 years ago. Things not covered in this article: Expected carrying capacity? How much dark fiber (initially unused capacity)? How much extra cable is required to make sure it stays on the bottom even when going over oceanic mountain ranges? How much of the ocean-floor survey data is open, how much is proprietary, and how much is (military-style) secret? Is there any sabotage? Do nav charts warn about these things?