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Communicating with submarines is actually a nightmare. The saltwater ruins most radio communications, so you have no chance to receive GPS signals, which are pr
by minedwiz 3y ago
Communicating with submarines is actually a nightmare. The saltwater ruins most radio communications, so you have no chance to receive GPS signals, which are pretty weak even on the surface.
One thing the military does/did to communicate with subs is use low-bandwidth text-only very low frequency radio, but you need colossal transmitters and there's no way the mother ship carries one. Hydrophones are also an option, and IIRC NATO even has a working sound-based modem to transmit digital signals to subs, but not sure if that has spread in the civilian market.
- scarnz 3y agoI concur. Message is authentic.
- camel_gopher 3y agoMessage is authentic. Set condition 1-SQ.
- bombcar 3y agoThe easiest way for a sub to communicate with the surface is to launch an icbm. Or fire a torpedo and detonate it.
- Prickle 3y agoMilitary submarines also have a towed communications buoy that they can use to communicate with satellites. But that thing is connected to the submersible via a cable.
- closewith 3y agoEven then, ELF is only available down to depths of hundreds of metres, not kilometres.
- snaily 3y agoThere's at least one commercial acoustic underwater modem provider - Subnero out of Singapore. They claim up to 5km range: https://subnero.com/products/modem.html https://subnero.com/products/modem.html
- closewith 3y ago> 4 km of communication range (horizontal) in littoral waters Probably much lower range vertically.
- rkangel 3y agoThe important issue with VLF radio in this case is that what we need is sub->ship communication. VLF relies on massive antenna, often ground based to (very slowly) send message to subs. My understanding is that for comms the other way, the sub needs to raise an antenna above the surface (then possibly doing laser comms to a satellite so that no radio emissions give away sub locations).
- TecoAndJix 3y agoINT ZBZ