Special thanks to our Japanese shipspotter colleague Toma_san for the pictures. The Asahi-class is based on the preceding Akizuki-class of destroyers (and both share the same hull form) but the Asahi-class focuses on anti-submarine instead of anti-air warfare. JS Shiranui is the second Asahi-class anti-submarine destroyer (25DD program) of the JMSDF. JS Shiranui is the second Asahi-class anti-submarine destroyer (25DD program) of the JMSDF. Pictures by our Japanese shipspotter colleague @toma_sanAsahi-class destroyers have a crew complement of 230 sailors and can embark one SH-60J/K helicopter for ASW.