English: A Sikorsky S-58 utility helicopter used by the Japan Coast Guard from 1958 to 1973. According to museum signage, this particular helicopter (construction number 58-945, serial number JA7201) was assembled in 1958 by Mitsubishi Heavy Industries from a knockdown kit provided by Sikorsky Aircraft. From 1959 to 1962, JA7201 was attached to the research ship Sōya and participated in the 3rd to 6th Japanese Antarctic Research Expeditions. Most famously, JA7201 was the helicopter that rescued the sled dogs Taro and Jiro in January 1959, who had been abandoned at Showa Station 11 months prior. From 1964 until its retirement in 1973, JA7201 performed maritime rescue, pollution monitoring, and maritime traffic guidance duties for the coast guard. The helicopter is currently a part of the collection of the National Museum of Nature and Science, and since 2024 it has been on display at The Hirosawa City theme park in Chikusei, Japan. Photo taken in 2026. Note that the museum signage simply refers to this helicopter as "S-58", without any indication of a particular model. The signage emphasizes that this aircraft was a civilian model, and cites the engine as the Curtiss-Wright 989C9HE2 (the designation of the R-1820-84 Cyclone used for export and civilian models). Given the build date, that would make JA7201 most likely a S-58B model . However, online databases list this airframe as being a HUS-1 Seahorse, a military variant of the helicopter used by the U.S. Navy. In practical terms, there are only minor equipment differences between the two models.