The Oyashio class is a series of Japanese diesel-electric attack submarines operated by the JMSDF. The submarines entered service in the late 1990s. The submarines are larger than the earlier Harushio class, to provide space for a flank sonar array.

During the event of Gate: Weight Anchor, Itami commands this type of submarine during his mission.


The Oyashio-class submarine in real life


The Oyashio-class submarine in the background in Weight Anchor.

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