youtu.be/gdy0gBVWAzE - 12 minute video - 6 million views in 1 year
US subs do 77 day cruises - then a 25 day overhaul - then a 2nd crew
takes the sub for another 77 day cruise
on board - the crewmen work 8 hours per day & is offduty for 16 hours
VLF radios work to 60 feet down
just 6 countries have ballistic subs - India - France - China - US - UK - Russia
maybe Israel and North Korea also
UK has 4 ballistic subs
there are just 2 types of subs - ballistic and attack - ballistic are
larger than attack
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