JS Shirayuki (DD-123/TV-3517) was a Hatsuyuki-class destroyer of the Japan Maritime Self-Defense Force.
A hangar and flight deck are carried for a single helicopter, which was initially the Mitsubishi HSS-2, a license-built Sikorsky Sea King, later replaced by Mitsubishi H-60s (licensed Sikorsky S-70s), with the Canadian Beartrap haul-down system fitted to ease operations of large helicopters.
[1][2] The initial anti-aircraft armament consisted of a Sea Sparrow surface-to-air missile launcher aft, with an OTO Melara 76 mm gun forward.
Eight Harpoon anti-ship missiles are carried in two quadruple mounts abaft the ship's funnel.
[1] Shirayuki was ordered as part of the Japan Self-Defense Forces 1978 defense estimates as the second ship of the Hatsuyuki class, and was laid down at Hitachi's Maizuru shipyard on 3 December 1979.