The Harbour line is a branch line of the Mumbai Suburban Railway operated by Central Railway. It was named so because it catered to the eastern neighbourhoods along the city's natural harbour. Its termini are Chhatrapati Shivaji Maharaj Terminus (CSMT), Goregaon and Panvel on the CSMT-Goregaon, CSMT-Panvel and Panvel-Goregaon routes.

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Harbour line
Overview
Owner	Indian Railways
Locale	Mumbai, Maharashtra Navi Mumbai, Maharashtra Thane, Maharashtra
Termini	Chhatrapati Shivaji Maharaj Terminus Goregaon, Panvel
Stations	35
Service
System	Mumbai Suburban Railway
Services	List CSMT–Panvel Goregaon–Panvel CSMT-Goregaon
Operator(s)	Central Railway (CR)
Depot(s)	Kurla, Sanpada
Rolling stock	Jessop, Siemens
Daily ridership	1 million[1]
History
Opened	12 December 1910; 113 years ago (1910-12-12)
Technical
Line length	66 km (41 mi)
Character	At grade and elevated
Track gauge	5 ft 6 in (1,676 mm) broad gauge
Electrification	Yes
Route map Legend Konkan Railway to Roha to Uran Panvel Konkan Railway to Karjat and Vasai Road Khandeshwar Mansarovar Taloja River Kharghar CBD Belapur Nerul–Uran line to Uran Western line to Dahanu Road Seawoods–Darave planned extension to Borivali Nerul Goregaon Juinagar Ram Mandir Trans-Harbour line to Thane Jogeshwari Sanpada Line 1 Andheri Vashi Sahar Airport Vile Parle Thane Creek Sahar Airport Santacruz Mankhurd Khar Road Govandi Chembur Line 1 Bandra Tilak Nagar Mithi River Central line to Thane Mahim Junction Kurla LTT Western line to Churchgate Central line Chunabhatti King's Circle Guru Tegh Bahadur Nagar   Line 1 Vadala Road Line 1 Sewri Cotton Green Reay Road Dockyard Road Central line Sandhurst Road Masjid Line 3 Mumbai CSMT

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The line is a double line and therefore does not have any fast trains on it. The line runs parallel to the Central Railway line till just before Sandhurst Road station where the line turns eastward and runs elevated up till Sewri. At Wadala Road, the line branches into two. The first line goes towards King's Circle and then joins with the Western line at Mahim where it runs parallel with the Western Line on right side. It then switches sides via an elevated bridge between Bandra and Khar Road where it runs on the left side and finally terminates at Goregaon. The second line follows through Mankhurd into the city of Navi Mumbai, where it again branches out into two lines, one going to Thane (Trans-Harbour Line) and the other to Panvel. The first stop outside Mumbai is the township of Vashi.

The stations in Navi Mumbai are well maintained and beautifully designed by CIDCO. There are IT offices above the stations. The rail bridge connecting Vashi and Mankhurd railway stations running over Thane creek, parallel to the road bridge has brought Navi Mumbai closer to Mumbai, boosting the development of the region.

About 580 services run daily on the Harbour line.^[2] Approximately 208 of those are on the Thane-Vashi-Nerul-Panvel route and 172 of those run on the CSMT-Goregaon route.^[3]

The first section of the Harbour line, between Kurla and Reay Road, opened on 12 December 1910. In 1925, the line was connected to the then Victoria Terminus via an elevated rail corridor between Dockyard Road and Sandhurst Road.^[4] Suburban services to Mankhurd began in 1951.^[5]

Later, the line was extended from Mankhurd to serve most of Navi Mumbai through the suburban rail network via the Mankhurd–Belapur–Panvel rail corridor was commissioned in phases in the 1990s. The line was extended to Vashi, with the inaugural suburban service being flagged off by President Ramaswamy Venkataraman on 9 May 1992. The Harbour line was further extended to Nerul in February 1993, Belapur in June 1993 and Panvel in June 1998.^[5] The corridor was converted to a double line in April 2000.^[6]

In 2004, the Trans-Harbour line was opened to the public. The line directly connected Vashi to Thane. This proved to be a boon for commuters of the two stations, who, until then, had to take a circuitous route via Mumbai city and had to change trains at Kurla.

The last direct current (DC) suburban local train ran on the Harbour line on 10 April 2016. The special train left Kurla at 11:30 pm and reached CSMT at 12:15 am. The iconic yellow-and-maroon DC local trains had their first service on 3 February 1925, when the first electric local ran between CSMT and Kurla ran on the Harbour line. The tickets for the last service were priced at ₹10,000 (US$130), with the proceeds to be donated to drought-affected regions of Maharashtra. The Indian Express reported that not a single ticket was sold. After the last DC service ran, Central Railway officially announced the completion of DC to AC conversion on the Harbour line.^[7]

On 4 September 2016, the last 9 car train was put into a sunset as all the trains were converted to 12 coach, which increases the carrying capacity of the line by 33%.^[8] Harbor line services were extended up to Goregaon on 29 March 2018.^[9][10] Work is underway to extend the line up to Borivali.^[11]

(All Harbour line services are slow, which means they halt at all passing by stations.)

At Wadala Road, the Harbour line splits into two corridors, one going to Panvel and the other to Goregaon.

The exact split occurs 800 metres north of Wadala Road station, at a location known as Ravli (variously spelled as Raoli, Ravali or Rawli) corresponding to the nearby Ravli slum. There is no railway station at Ravli Junction. However, due to the critical Ravli Junction Yard signal box, there are various public references to this name in news articles and other sources.^[12][13]

• Mumbai Suburban Railway
• List of Mumbai Suburban Railway stations
• CST–Panvel Fast Corridor
• Central Railway