Comments by "rejvaik" (@rejvaik00) on "Living Underwater: How Submarines Work" video.

  1. India and Russia also have ELF capability meaning they can send one way messages consisting of 2 characters to a submarine that is still submerged anywhere in the world and at any depth. The US used to have ELF capability until 1980 when they decommissioned the ELF facility because the antenna was over 2.2 miles long and the output power requirements were too expensive to maintain.
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