{"version":"1.0","provider_name":"Rainbow Dash Network","provider_url":"http:\/\/rainbowdash.net\/","type":"link","title":"Cerulean Lulamoon-Spark (ceruleansparkold)'s status on Friday, 15-Jun-12 10:21:33 UTC","author_name":"Cerulean Lulamoon-Spark (ceruleansparkold)","author_url":"http:\/\/rainbowdash.net\/ceruleansparkold","url":"http:\/\/rainbowdash.net\/notice\/1542276","html":"@<span class=\"vcard\"><a href=\"http:\/\/rainbowdash.net\/user\/9384\" class=\"url\" title=\"Ditzy &quot;Derpy&quot; Hooves Esquire\"><span class=\"fn nickname\">comradeconventrix<\/span><\/a><\/span> Strictly speaking there is active and passive sonar. Passive sonar is what you are talking about, and active is what I was talking about. \n\nAlso, a jet-powered submarine would create distinctive, detectable turbulence in the water."}