3 ms·
They fact-checked "salinity-matched C4"? My god they're terrible.
by runnerup 4y ago
They fact-checked "salinity-matched C4"? My god they're terrible.
- HybridCurve 4y ago"The American explosive devices needed to be camouflaged in a way that would make them appear to the Russian system as part of the natural background—something that required adapting to the specific salinity of the water" This was the most ridiculous part. I can't think of a reason they would prefer to use an explosive charge in a position visible to inspection.
- bhk 4y agoAcoustic impedance of seawater varies with salinity.
- runnerup 4y agoSure but that doesn’t generalize to other materials. Salinity matched C4 won’t be acoustically matched. Definitely a red herring point.
- bhk 4y ago"Salinity matched" does not make any sense, and the article said nothing of the sort. It said "make them appear ... as part of the natural background — something that required adapting to the specific salinity of the water". Making something invisible to sonar could depend on the acoustic impedance (which varies with salinity) of the surrounding water and might involve adapting the object accordingly.