– US Navy War College Review – While the United States and Japan share many values, their legal systems take distinct approaches to authorizing military operations. But the two approaches converge within the alliance structure—especially important with regard to implementing the international law of self-defense.

– War Zone – Japan would become the second-largest Lightning II operator in the world if it bought all 105 jets in the proposed deal.

– USNI News – Japan has formally ended its plans to procure two Aegis Ashore missile defense sites, citing concerns that the booster on the Standard Missile-3 Block IIA interceptor missile couldn’t be guaranteed to land on military property instead of nearby civilian communities.

– Defense News – The last of Japan’s eight planned destroyers capable of intercepting ballistic missiles has started sea trials ahead of its commissioning, even as the country ponders its next move following its decision to suspend plans to introduce ground-based systems for that role.

– Asahi Shimbun – A submarine of foreign origin, presumed to belong to the Chinese Navy, was spotted passing through the contiguous zone off the coast of Amami-Oshima island in southern Japan.

– Naval News – The Japanese Ministry of Defense (MOD) announced this week its intention to halt deployment of the Aegis Ashore missile defense system citing difficulties in ensuring that rocket boosters from the interceptors do not fall in populated areas. The real reason may actually have to do with the radar system, namely SPY-6 and SPY-7.

– USNI News – Japan is backing away from installing two Aegis Ashore ballistic missile defense (BMD) systems in the country over technical concerns.

– South China Morning Post – Japan is developing a hypersonic anti-ship missile, a weapon that can cruise at high altitudes and could pose a threat to Chinese aircraft carriers in the East China Sea.

– Naval News – Japan continues to reinforce its Southern Islands. A new Type 12 Surface-to-Ship Missile (12式地対艦誘導弾) unit has recently been deployed at the garrison on Miyakojima island.

– Kyodo News – A Japanese Maritime Self-Defense Force destroyer and a Chinese fishing boat collided on the high seas off the coast of Shanghai on Monday.

– Naval News – The Japan Maritime Self-Defense Force (JMSDF) commissioned today its first Maya-class AEGIS Destroyer at Japan Marine United Corporation (JMU) Isogo shipyard in Yokohama. JS Maya まや (DDG-179) joins the JMSDF’s Escort Flotilla 1, based in Yokosuka.

– South China Morning Post – The Aki is first ship in three decades built to hunt for submarines, as Japan sees a rise in unidentified subs, believed to be from China, within its waters. But Tokyo is also keeping a close eye on North Korea, which has been developing a platform for submarine-launched ballistic missiles.

(Thanks to Alain)

– Naval News – The Japan Maritime Self-Defense Force (JMSDF) commissioned its 11th Soryu-class diesel-electric attack submarine (SSK) in Kobe in Hyogo Prefecture on March 5, 2020. JS Ōryū (SS-511) joins the JMSDF’s Submarine Flotilla 1, based in Kure. It is the first-in-class boat to feature lithium-ion batteries.

– Naval News – The Japan Ground Self-Defense Force (JGSDF) plans to deploy a Hyper-Velocity Gliding Projectile (HVGP) in fiscal year 2026 as a new weapon to repel enemies that invade Japan’s remote islands, from a safe distance. This HVGP could even target large surface ships such as aircraft carriers.

– USNI News – This year’s Iron Fist exercise marked the first time this group of 310 Japanese soldiers – 3rd Company with 2nd Amphibious Rapid Deployment Regiment Landing Team – launched from a ship and landed ashore in a coordinated mission alongside Marines, who earlier had launched their AAVs from the San Antonio-class amphibious transport dock USS Portland (LPD-27).

– Naval News – Photos taken on February 10, 2020 show a P-1 Maritime Patrol Aircraft (MPA) of the Japan Maritime Self-Defense Force (JMSDF) flying with four new air-to-ship missiles (ASM) which are currently under development.

– Naval News – On February 2, 2020, the destroyer Takanami (DD-110) departed from the Japan Maritime Self Defense Force (JMSDF) Yokosuka Naval Base for the Middle East.

– Naval News – The Japan Coast Guard (JCG) yesterday took delivery of a new patrol vessel the Shunkō (PLH-42).

– CBC – A Japanese warship departed Sunday for the Middle East to ensure the safety of the country’s oil tankers in waters where tensions between the U.S. and Iran are high.

– Naval News – Japan’s Ministry of Defense (MoD) has announced in its FY2020 defense budget that it will invest 3.1 billion yen (approximately US $ 28.3 million) to refurbish the destroyer Izumo which is the largest vessel in Japan Maritime Self Defense Force (JMSDF).

– US Naval War College Review – The security of Japan’s maritime borders is a top priority for the country’s government. The roles of the Japan Coast Guard and the Japanese Maritime Self-Defense Force are paramount in these security operations as Japan navigates an international landscape in the East China Sea complicated by an emboldened China.

– Naval News – Japan’s shipbuilder Kawasaki Heavy Industries (KHI) launched the 12th and final Soryu-class diesel-electric attack submarine (SSK) for the Japan Maritime Self-Defense Force (JMSDF). JS Tōryū (とうりゅう) SS-512 is the second submarine of the class to feature Li-Ion batteries.

(Thanks to Alain!)

– South China Morning Post – Japan’s decision to deploy two warships to the Middle East to ostensibly protect its merchant vessels as they traverse the region’s key waterways has once again cast the spotlight on Prime Minister Shinzo Abe’s ambitions to revise the country’s war-renouncing constitution.

– War Zone – The US-2 may look like one of the flying boats of yesteryear, but it is actually a very modern aircraft with some remarkable features.

– USNI News – Officials in Tokyo have requested Marines deploy F-35B fighters aboard Japan’s largest warships.