|Service type||Limited express|
|First service||1 March 1965|
|Current operator(s)||JR West|
Wakayama, Kainan, Kii-Tanabe, Shirahama, Shingū
|Distance travelled||315.5 km (196.0 mi) (Kyoto – Shingū)|
|Average journey time||4 hours 15 minutes approx (Shin-Ōsaka – Shingū)|
|Service frequency||16 return workings daily|
|Line(s) used||Tokaido Main Line (JR Kyoto Line), Osaka Loop Line, Hanwa Line, Kisei Line (Kinokuni Line)|
|Class(es)||Standard + Green|
|Other facilities||Toilets, Woman-only seats|
|Rolling stock||283 series, 287 series, 289 series|
|Track gauge||1,067 mm (3 ft 6 in)|
|Electrification||1,500 V DC|
|Operating speed||130 km/h (81 mph)|
|Track owner(s)||JR West|
The Kuroshio (くろしお) is a limited express train service in Japan connecting Kyoto, Shin-Osaka, Tennōji, Wakayama, Kii-Tanabe, Shirahama, and Shingu via the Tokaido Main Line (JR Kyoto Line), Osaka Loop Line, Hanwa Line, and Kisei Line (Kinokuni Line), operated by West Japan Railway Company (JR West). This article covers the derivative limited express trains, "Super Kuroshio (スーパーくろしお)" and "Ocean Arrow (オーシャンアロー)", the names of which were discontinued from start of the revised timetable on 17 March 2012.
Stations in parentheses are not served by all trains.
Trains stop at the following stations:
Kyōto – Shin-Ōsaka – Ōsaka – Tennōji – (Izumi-Fuchu) – Hineno – (Izumi-Sunagawa) – Wakayama – Kainan – (Minoshima) – (Fujinami) – (Yuasa) – Gobō – (Minabe) – Kii-Tanabe – Shirahama – Susami – Kushimoto – Koza – Taiji – Kii-Katsuura – Shingū
The 381 series had chimes that matched the image of each station. The chimes will be played before the train arrives at the stations. Its use was discontinued because of the deterioration of the broadcasting equipment.
The chimes for each station are the following with translations of the song names and possible reasons to why those chimes were chosen for each station.
|Kyōto||Gion Ballad (祇園小唄 Gion Kouta)||A song related to Gion, a geisha district in Kyōto.|
|Shin-Ōsaka||Osaka Romance (大阪ろまん Ōsaka Roman)||A song related to Ōsaka by Frank Nagai.|
|Tennōji||Railroad Song (鉄道唱歌 Tetsudō Shōka) / Dotonbori March (道頓堀行進曲 Dōtonbori Kōshinkyoku)||The station is located near Dōtonbori. Dōtonbori Kōshinkyoku was used from around 1989-1999 in trains heading towards Ōsaka.|
|Ōtori||Town of Song (うたのまち Uta no Machi)||Presumed to be the blacksmithing mentioned in the song lyrics. Trains used to stop at this station.|
|Hineno||No song title||Kuroshio original chime|
|Wakayama||Ball and Lord (鞠と殿様 Mari to Tonosama)||A song related to Wakayama City.|
|Kainan||Oh the Ranch is Green (おお牧場はみどり Ō Makiba wa Midori)||The Oishi Kōgen is a plateau that extends from Koya-san to Kainan. The Japanese adaption of the song "Ah Lovely Meadows".|
|Minoshima||The Hill with Blooming Mandarin Flowers (みかんの花咲く丘 Mikan no Hanasaku Oka)||Arida is one of the largest producers of mikan in Wakayama Prefecture.|
|Yuasa||Harbor (みなと Minato)||The station is located near the Yuasahiro-kō Port.|
|Gobō||Sea (海 Umi)||Gobō is located next to the sea.|
|Minabe||Did the Plum Bloom (梅は咲いたか Ume wa Saitaka)||Minabe is famous for umeboshi.|
|Kii-Tanabe||Ushiwakamaru (牛若丸 Ushiwakamaru)||Tanabe is the birthplace of Musashibo Benkei|
|Shirahama||Music Box of Love (愛のオルゴール Ai no Orugōru)||The song has an alternate name (潮騒のメロディー Shiosai no Merodī) and it gives the image of a sandy beach. The song is called Music Box Dancer in English.|
|Tsubaki||The Monkey Palanquin Bearers (お猿のかごや Osaru no Kagoya)||The region is the habitat of Japanese monkeys in Wakayama Prefecture. Trains used to stop at this station.|
|Susami||Five Little Pigs and Charleston (五匹の子豚とチャールストン Gohiki no Kobuta to Chārusuton)||Susami is famous for inobuta.|
|Kushimoto||Kushimoto-bushi (串本節 Kushimoto Bushi)||A folksong of Wakayama Prefecture and related to Kushimoto.|
|Koza||I am the Child of the Sea (われは海の子 Ware wa Umi no Ko)||Koza is said to be the birthplace of the Kumano Navy.|
|Taiji||Port of Departure (出船の港 Shussen no Minato)||Taiji is the birthplace of whaling in Japan.|
|Kii-Katsuura||Good Hot Water (いい湯だな Iiyu Dana)||Nachikatsuura is one of the leading hot spring resorts in Wakayama prefecture along with Shirahama.|
|Shingū||Pigeon Coo (鳩ぽっぽ Hato Poppo)||Shingū is the hometown of Kume Higashi, the lyricist.|
Osaka Station, Nishikujo Station, Izumi-Fuchu Station, Izumi-Sunagawa Station, and Fujinami Station are not included in this table as there were no chimes recorded.
New 287 series EMUs were introduced on Kuroshio services from start of the revised timetable on 17 March 2012. From the same date, the Super Kuroshio and Ocean Arrow service names were discontinued, with services integrated with Kuroshio services.
New 289 series EMUs converted from former dual-voltage 683 series trainsets were introduced on Kuroshio services from 31 October 2015, replacing the last remaining JNR-era 381 series trains. The 289 series fleet consists of five six-car sets and three three-car sets (39 vehicles in total).