HMS Yamamoto Date was a Roland-class destroyer of the Royal Manticoran Navy.
In February 1922 PD, the ship was docked in Naval Shipyard HF/1-17 aboard the space station HMSS Hephaestus together with its sister ships HMS Saladin and HMS Barbarossa; all three vessels were completing their final fitting out, with almost their full complements already embarked. At that point, the station was attacked by Mesan graser torpedoes as part of the Mesan Alignment Navy's Operation Oyster Bay. A graser beam cut Saladin clean in half, causing her fusion plant to lose containment. The resulting explosion destroyed all ships, including Yamamoto Date, and the entire compartment. (HH12)