![In some ways [detection] may be easier — for example, a contact can be detected ‘over the horizon’ underwater because sound bends with the curvature of the earth USS Olympia](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg2rQwo6Er8atjin2Z3Wri6wSLDMHOEnDVRFXvUrDFupPCEZuYZFz9HNxjPNH-g5uW4Kbi0XE4uTulgNaVgDTRM8HXYt_GfO93DXEtglpM3HOa_Hp51-IzLPSytDdz0h7-9YKmA/s560/USS_Olympia.jpg)
New detection technologies from low-frequency sonar to flashing LEDs — plus the big data computing power to enhance the faint signals they pick up — are making submarines much easier to detect. The same water-penetrating wavelengths, however, will also make it much easier for submarines to communicate with each other.
The net result should be radically new tactics, Bryan Clark, a career submariner and former top aide to the Chief of Naval Operations, says in a new study for the Center for Strategic and Budgetary Assessments out today.
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