Photo: P-8A launched first MK 54 torpedo Posted on October 27, 2011October 27, 2011 by alert5 The P-8A Poseidon successfully launched the first MK 54 torpedo during a test event in the Atlantic Test Range Oct. 13. U.S. Navy photo Related posts (Automatically Generated): P-8A launches first sonobuoys STSS successfully acquired and tracked short-range, air-launched target EMALS successfully launches E-2D First Operational Test P-8A arrives at NAS Patuxent River THAAD hits 2 different targets First torpedo launched from C295