Shoeburyness Boom
... that the Shoeburyness Boom is the only known Cold War anti-submarine boom?
... that the <b id="mwAds"><a href="./Shoeburyness_Boom" id="mwAdw" rel="mw:WikiLink" title="Shoeburyness Boom">Shoeburyness Boom</a></b> is the only known <a href="./Cold_War" id="mwAd0" rel="mw:WikiLink" title="Cold War">Cold War</a> anti-submarine boom?