The Naval SITREP is published twice a year by the Admiralty TrilogyGroup. It supports the Admiralty Trilogygame system with scenarios, articles on history and technology, and rules expansions & corrections. The Naval SITREP Issue #54 was published in April of 2018. Table of contents: North Korea’s Armed Forces ... Just in Case Annex A - North Korean Ships Annex B - North Korean Aircraft Annex F - North Korean Torpedoes Korean People’s Navy Organization Korean People’s Air Force Organization The Kumsong-3 Missile The U.S. Navy Tries Again What is Electromagnetic Maneuver Warfare? The Type 093 Shang class SSN Chinese ECM Defenses Chinese Gun Correction DoB Scenario: The Battle of Vladivostok HarpoonSimPlot 2 Update HarpoonMovement Rulers The Chengdu J-20 is “Operational” Queen ElizabethJoins the Royal Navy Late Word: New Russian Hypersonic Missile Rule Changes and Corrections The Distributed Aperture System Stealth* CaSRule Correction: Bombing Runways Product Updates Seawulf Minis Fight’s On! Update Obituaries Robert W. Eldridge, 1948 - 2017 Book Reviews The Great Halifax Explosion, by John U. Bacon