– CIMSEC – To increase the potency of the JMSDF even further, the acquisition of aircraft carriers (CVs) would be a logical next step. Yet, as CVs can best be described as seagoing airbases with significant offensive capabilities, Japan’s pacifist constitution prohibits their use in its navy. Destroyers (DDs) on the other hand rely on speed and maneuverability and are easily employed in defensive roles, criteria deemed acceptable under the Japanese Constitution. Therefore, to accommodate this unique political limitation, the Japanese have designated one of their latest vessels as a “helicopter destroyer” (DDH) but with capabilities akin to those of an aircraft carrier.

– Japan Times – With Australia’s release of its defense white paper last week, the race to build the country’s next generation of submarines enters the home stretch — and some experts say the Japanese bid appears to hold an insurmountable lead.

– Maritime Executive – An armada of carriers, cruiser, destroyers and submarines gathered off Japan’s coast on Sunday in a display of naval power that showcased Tokyo’s latest warships and signalled wider engagement by the U.S. Navy in the western Pacific.

NAPSNet – This is a study of Japan’s ground-based signals intelligence (SIGINT) stations, the 17 (soon to be 19) major facilities that intercept, monitor, collect, process and analyse foreign electronic signals. Official statements convey nothing of the scale or detail of the Japanese SIGINT effort, which is probably the third or fourth largest SIGINT establishment in the world. These Japanese ground signals interception and location facilities are integrated with its air and missile defence radar facilities. Together with Japan’s own long-range underwater surveillance systems, and combined with the Japan-based US parallel air, ground and underwater surveillance systems, they take Japan a very long way towards its stated aim to ensure information supremacy in the region. As potentially lucrative targets in the event of war, destruction of these important but vulnerable facilities could alter escalation dynamics in such a way that the widespread assumption that a Japan-China armed conflict could be controlled before substantial escalation may not hold true.

– USNI News – Japan has launched the second in its new class of helicopter carrier — the largest Japanese ships since World War II — in a Thursday ceremony in Yokohama.

– USNI News – The government of Prime Minister Shinzo Abe has proposed major changes in Japan’s defense policy, with strong implications for the United States and U.S. armed forces in the Pacific. The changes, designed to shift Japan away from an isolated, pacifistic defense posture to a more dynamic one based on bilateral and even multilateral relationships, are controversial but not uncommon to most nations.

– Breaking Defense – You’d expect the top admiral in the Japan Self-Defense Force to talk about defending Japan. But Adm. Tomohisa Takei surprised me on his latest visit to Washington — his third in 10 months — with a speech that clearly demonstrates how Japan is broadening its strategic perspective. The new view from Tokyo takes in the Indian Ocean and, especially, the disputed South China Sea. Driving this change, of course, is an alarmingly assertive China.

– FoxtrotAlpha – Japan is looking to further militarize Ishigaki-Jima with both surface-to-air and anti-ship missiles. Ishigaki Island is just 100 miles east of Taiwan and about 100 miles south of the highly disputed Senkaku Islands, putting it in a volatile yet strategic geographic position.

– USNI News – Congress has received notification of a potential $3 billon sale of 17 Bell-Boeing V-22 Osprey tilt-rotor aircraft and support equipment to Japan.

– Australian National University Press – A must read new book by Professor Desmond Ball which is freely available.

He writes that Japan is quintessentially by geography a maritime country. Maritime surveillance capabilities – underwater, shore-based and airborne – are critical to its national defence posture. This book describes and assesses these capabilities, with particular respect to the underwater segment, about which there is little strategic analysis in publicly available literature.

– Saturday Paper – The US and Japan have quietly cornered the Chinese navy with an undersea surveillance ring that is framing Australia’s defence policy.

– USNI News – A 24,000-ton helicopter carrier has formally entered the fleet of Japan’s Maritime Self Defense Force (JMSDF) on Wednesday making the ship the largest warship Japan has fielded since the close of World War II.

– The Diplomat – In order to win, Japan should give China a dose of its own medicine.