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Dolphin Rock Lighthouse

Fl (4) White/Red 20s🇮🇳INOperational

Location & Light Range

About Dolphin Rock Lighthouse

This cylindrical stone tower, built in 1850, stands 13 meters tall and has a focal height of 11 meters. It is located in Mumbai Harbour, approximately 2.5 kilometers north of Sunk Rock Light. The lighthouse displays four flashes, alternating white and red, every 20 seconds, with a geographic range of 10.7 nautical miles. Its original structure included a round stone tower topped by a circular keeper's house, gallery, and lantern. The lantern component later collapsed and was removed. The tower is painted white and is accessible only by boat.

Why it matters: The lighthouse's unique architectural combination of a round stone tower and a circular keeper's house distinguished it within the region.

Light & Optic

Characteristic Signature
Fl (4) White/Red 20s
Flash Type
Flashing
Light Color
White/Red
Flash Count
4 flashes
Interval
20s
Raw Code
Fl(4) W R 20s
Focal Height
11m
Geographic Range
10.7NM

Construction & History

Year Built
1850

Significant events: lantern collapsed and removed

References & Identifiers

Nearest Port
Mumbai(4.4 km)
ARLHS No.
IND-002

Tower & Structure

Tower Height
13m
Tower Shape
cylindrical
Tower Color
white
Material
stone

Structure: round stone tower topped by a circular keeper's house, lantern and gallery

Location

Country
🇮🇳IN
Sea Region
Mumbai Harbour, about 2.5 km north of Sunk Rock Light
Latitude
18.9142°
Longitude
72.8358°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Dolphin Rock Lighthouse at night?+
Dolphin Rock displays the characteristic Fl (4) White/Red 20s — 4 white/red flashes every 20 seconds. Each lighthouse has a unique flash pattern published in the List of Lights, allowing mariners to positively identify it and distinguish it from other navigation aids in the area. The white/red color may indicate a specific sector or warning zone.
Which ports and harbors does Dolphin Rock Lighthouse guide vessels into?+
Dolphin Rock Lighthouse assists vessels approaching 5 nearby ports. The closest is Mumbai (ex Bombay) at 1.9 NM to the NE. Other ports served include Uran (5.8 NM ESE), Nhava Sheva (Jawaharlal Nehru) (6.8 NM ENE), Nhave (7.7 NM ENE), Karanja (8 NM ESE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Dolphin Rock Lighthouse still active and maintained?+
Yes, Dolphin Rock Lighthouse is currently operational. It is actively maintained and continues to emit its characteristic light signal for marine navigation. Most modern lighthouses are automated and monitored remotely by the national maritime authority.
How can I track vessels near Dolphin Rock Lighthouse?+
You can track vessels near Dolphin Rock Lighthouse in real time using MarineRadar. The platform shows live AIS positions of ships in the area, including vessel name, type, flag, speed, and course. Use the "Track Vessels Nearby" button on this page to open the live map centered on this lighthouse.