over a mountain Yukigumo (雪雲) Snow cloud Hae (南風) South wind of dialect word in Okinawa Prefecture, standard Japanese is Minamikaze Hayaharu (早春) Early spring Type 'D' destroyers—plants Matsu (松) Pine tree (梨) Pyrus pyrifolia Wakakusa (若草) Spring grass Torpedo boats Until 15 January 1924 First class torpedo boats (and over 120 tons displacement)—birds Hayabusa (隼) Peregrine falcon Second class and third class torpedo boats (less than 120 tons displacement)—consecutive number from '1' Torpedo boat No. 21 (第21号水雷艇) And after 30 May 1931—birds Chidori (千鳥) Plover Kiji (雉) Pheasant Submarines Until 31 October 1924—consecutive number from '1' Submarine No. 1 (第1潜水艦) Submarine No. 44 (第44号潜水艦) And after 1 November 1924 First class submarines (and over 1,000 tons displacement) — 'I' (伊) and consecutive number from '1', 'I' is first letter in the Iroha I-1 (伊号第1潜水艦) I-Gō Dai-1 sensuikan I-51 (伊号第51潜水艦) I-Gō Dai-51 sensuikan Second class submarines (and over 500 tons displacement — less than 1,000 tons displacement) — 'Ro' (呂) and consecutive number from '1', 'Ro' is second letter in the Iroha Ro-1 (呂号第1潜水艦) Ro-Gō Dai-1 sensuikan Ro-51 (呂号第51潜水艦) Ro-Gō Dai-51 sensuikan Third class submarines (less than 500 tons displacement)—'Ha' (波) and consecutive number from '1', 'Ha' is third letter in the Iroha, third class submarines were unified to second class submarines on 30 May 1931 Ha-1 (波号第1潜水艦) Ha-Gō Dai-1 sensuikan Ha-9 (波号第9潜水艦) Ha-Gō Dai-9 sensuikan Gunboats—places of scenic beauty and historic interest Ataka (安宅) Ataka-no-Seki is a barrier station in Kamakura period Suma (須磨) Suma-no-Ura is beauty spot in Hyōgo Prefecture Coast defence ship/Escort ships Until 30 June 1942—Island Shimushu (占守) Shumshu is one of the Kuril Islands And after 1 July 1942 Type 'A' and Type 'B' Escort ships—Island Etorofu (択捉) Iturup Okinawa (沖縄) Okinawa Island Type 'C' escort ships—Odd numbers from '1' Type 'D' escort ships—Even numbers from '2' Submarine tenders—whales Jingei (迅鯨) Swift whale Seaplane tenders—abstract noun, idiomatic word, notable achievement vessels in past war Chitose (千歳) Long life Mizuho (瑞穂) another name of Japan, The Land of Vigorous Rice Plants by literal translation Nisshin (日進) succession to ship name Nisshin Akitsushima (秋津州) succession to ship name Akitsushima Minelayers as warship (fitted imperial seal on bow)—Island, islands, ancient battlefield Itsukushima (厳島) ancient battlefield of the Battle of Miyajima (Itsukushima Kassen) Okinoshima (沖島) Okinoshima, and battlefield of the Battle of Tsushima Yaeyama (八重山) Yaeyama Islands as mine boat and cable layer—cape, point, island, islet Sokuten (測天) Sokuten