[2] Destroyers built under the First Defense Build-up Plan, including the former Murasame class, adopted a unique long forecastle style called "Oranda-zaka".

[6] Under Captain Wakushima Hidetaka, on 29 January 2022, Yūdachi was involved in a training exercise with the German frigate Bayern in the Gulf of Aden, with cross-deck, tactical and close-combat maneuvers being conducted.

[7] In the same year, from 1 to 4 March, Yūdachi participated in the Indian Navy-led multinational joint exercise MILAN 2022, near Visakhapatnam, which also marked the first time the JMSDF had taken part in this particular event.

[12] In the same year, from 30 September to 10 October, she and Noshiro participated in a joint US-Japanese training south of Kanto region in the East China Sea with the aircraft carrier USS Ronald Reagan, cruisers Antietam and Robert Smalls, and the destroyer Shoup.

[13] Yūdachi participated in another US-Japanese joint training in the East China Sea off the coast of southern Shikoku from 19 to 21 November 2023, this time with the carrier USS Carl Vinson, and destroyers Hopper, Kidd, Sterett, and William P.