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 #55 was published in October of 2018. Table of contents: Features: HarpoonScenario: Convoy to Yemen, including annexes for ships, aircraft, weapons, and sensors. The Royal Saudi Navy The Royal Saudi Air Force Saudi Coast Defenses Saudi Air Defenses The Royal Saudi Strategic Rocket Forces The Royal Saudi Air Force Organization The Royal Saudi Navy Organization FG&DNScenarios: Adriatic Alternative: Montenegro Adriatic Alternative: Goeben The Not-So-Revolutionary Danton The Chinese Weapon Designation System Israel’s Rampage Missile - Countering Double-Digit SAMs More News from China: The H-6J and YJ-12 Rule Changes and Corrections SAMs vs. Ballistic Missiles (First Cut) Product Updates Press Release: Modern Chinese Maritime Forcesby Manfred Meyer Book Reviews: The Fauld Disaster,by Nick McCamley Islands of Destiny,by John Prados