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Semboku Line
A Semboku Rapid Railway 3000 series train in May 2013
Overview
Native name	泉北線
Status	Operational
Owner	Nankai Electric Railway
Locale	Osaka Prefecture
Termini	Nakamozu Izumi-Chūō
Stations	6
Service
Type	Commuter rail
Depot(s)	Nakamozu
Daily ridership	168,949 (daily 2015)[1]
History
Opened	1 April 1971
Technical
Line length	14.3 km (8.9 mi)
Number of tracks	2
Track gauge	1,067 mm (3 ft 6 in)
Minimum radius	400 m
Electrification	1,500 V DC, overhead catenary
Operating speed	100 km/h (60 mph)

TheSemboku Line (泉北線,Senboku-sen) is a railway line inOsaka Prefecture, Japan, operated by theprivate railway operatorNankai Electric Railway. The line connectsIzumi-Chūō Station andNakamozu Station, with through operations to and from theKōya Line up toNamba Station in southern downtown Osaka.

Along with services inside the line, through trains also operate to the Kōya Line beyond Nakamozu toNamba.

■Limited ExpressSemboku Liner (特急 泉北ライナー,Tokkyū Senboku Rainā) (LE)

All seats are reserved. Operations started on 5 December 2015. Trains pass Sakaihigashi and Fukai non-stop for the first time.^{[citation needed]}

■Sub-Express (区間急行,Kukan Kyūkō) (SbE)

Operated all day, through to Namba.^{[citation needed]}

■Semi-Express (準急,Junkyū) (SmE)

Trains are operated all day, through to Namba.^{[citation needed]}

■Local (各駅停車,Kakueki Teisha) (L)

Operated all day. Mainly shuttles between Nakamozu and Izumi-Chūō (some trains for Komyoike). During the daytime and late at night, some services operate between Izumi-Chūō and Namba.^{[citation needed]}

All stations are located inOsaka Prefecture.

• O: Trains stop.
• |: Trains pass.
• See theKoya Line article for the stops of the through trains to Namba between Namba and Nakamozu.

• Semboku 12000 series EMU
• Nankai 11000 series EMU (sometimes substituted byNankai 12000 series)

From 27 January 2017, a newSemboku 12000 series EMU was introduced onSemboku Liner services.^[2]

• 
  The Semboku 12000 series on aSemboku Liner service in February 2017
• 
  The Nankai 11000 series on aSemboku Liner service in November 2018

• Semboku 3000 series two- and four-car EMUs with stainless steel bodies^[3]
• Semboku 5000 series eight-car EMUs with aluminium bodies^[3]
• Semboku 7000 series two-, four-, and six-car EMUs with aluminium bodies^[3]
• Semboku 7020 series two-, four-, and six-car EMUs with aluminium bodies^[3]
• Semboku 9300 series four-car EMUs with stainless steel bodies (since 8 August 2023)^[4][5]

• 
  A Semboku 3000 series EMU
• 
  A Semboku 5000 series EMU in September 2016
• 
  A Semboku 7000 series EMU
• 
  A Semboku 7020 series EMU in August 2015
• 
  A Semboku 9300 series EMU in October 2023

• Semboku 100 series
• Nankai 50000 series EMUs (Semboku Liner, November 2022 – 2023)^[6][7]

• 
  A Semboku 100 series EMU in May 1995

The section from Nakamozu to Izumigaoka opened on 1 April 1971 as theSemboku Rapid Railway Line (泉北高速鉄道線,Senboku Kōsoku Tetsudō-sen), with1,067 mm (3 ft 6 in) double track and electrification at 600 V DC.^[8] The overhead line voltage was increased to 1,500 V DC from 7 October 1973, and the line was extended to Toga-Mikita on 7 December 1973.^[8]

The line was extended to Komyoike on 20 August 1977, and to Izumi-Chuo on 1 April 1995.^[8]

Owing to ongoing financial constraints caused by theCOVID-19 pandemic,Semboku Rapid Railway announced that it would be merged into Nankai Railway.^[9] The merger took place on 1 April 2025.^[10] In addition, the line was renamed to the Semboku Line. Stations were renumbered to NK88 at Fukai through NK92 at Izumi-Chūō.^[11]

• List of railway lines in Japan

• Lines of Nankai Electric Railway
• Rail transport in Osaka Prefecture
• Nankai Group
• 1971 establishments in Japan
• Railway lines in highway medians
• Railway lines opened in 1971
• 1067 mm gauge railways in Japan

• CS1 uses Japanese-language script (ja)
• CS1 Japanese-language sources (ja)
• Articles with short description
• Short description is different from Wikidata
• Articles needing additional references from November 2022
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• Use dmy dates from October 2016
• Articles containing Japanese-language text
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• Articles with unsourced statements from September 2021