Ports
22 events, 1815 to 2023; 1 marked as turning points.
1815
Tranquebar handed back to Denmark
Britain returned Tranquebar (Tharangambadi), occupied since 1808 during the Napoleonic Wars, to Danish rule on 20 September 1815.

1816
Pondicherry and Karaikal restored to France
After the Napoleonic Wars, Britain returned Pondicherry, Karaikal and the other French settlements in India to France in 1816.

1825
Dutch possessions on the Coromandel Coast pass to Britain
Under the Anglo-Dutch Treaty of 1824, the Dutch ceded their Coromandel settlements, including Pulicat, to the British on 1 June 1825.

1842
Ice House built on the Madras beach
Frederic Tudor built the Ice House facing the sea at Madras to store ice shipped from America; it is now Vivekanandar Illam.

1843
First emigrant ship from Madras reaches Mauritius
Britain allowed emigration from Madras to Mauritius again in December 1842, and the first ship from Madras reached the island in April 1843.
1844
Madras's first standalone lighthouse begins operation
A granite Doric column built north of Fort St. George began working as Madras's lighthouse on 1 January 1844.

1845
Denmark sells Tranquebar to the British
Denmark sold its settlement of Tranquebar (Tharangambadi) to the East India Company, ending Danish rule on the Tamil coast.

1860
Indentured labourers from Madras arrive in Natal on the Truro
Organised Indian settlement in the British colony of Natal began with the Truro, which brought 342 indentured labourers from Madras.

1872
Birth of V. O. Chidambaram Pillai
V. O. Chidambaram Pillai, later the founder of the Swadeshi Steam Navigation Company, was born at Ottapidaram in Tirunelveli district.

1881
Madras Harbour begins operations
An artificial harbour at Madras began handling ships in 1881, though a cyclone the same year wrecked much of the breakwater.

1906
V. O. Chidambaram Pillai founds the Swadeshi Steam Navigation Company
To compete with British lines on the Tuticorin-Colombo route, V. O. Chidambaram Pillai registered an Indian-owned shipping firm.

1914
German cruiser Emden shells Madras
Early in the First World War, the German light cruiser SMS Emden shelled Madras, setting fire to oil tanks in the harbour area.

1926
SS Rajula begins the Madras to Penang and Singapore service
The steamer SS Rajula ran a fortnightly Straits Service from Madras to Penang, Port Klang and Singapore from 1926 to 1972.

1936
Death of V. O. Chidambaram Pillai
Nationalist pioneer V. O. Chidambaram Pillai, who had started the Swadeshi Steam Navigation Company, died in Thoothukudi.

1965
Madras Refineries formed as a joint venture
Madras Refineries Limited was formed by the Government of India, Amoco and the National Iranian Oil Company to build a refinery at Manali.
1974
The new all-weather harbour at Tuticorin began operations as a major port, now known as V. O. Chidambaranar Port.

Poompuhar Shipping Corporation founded
The state-owned Poompuhar Shipping Corporation was founded; it later ran the ferries to the Vivekananda Rock at Kanyakumari.

1986
Thoothukudi (Tuticorin) district was carved out of Tirunelveli district on 20 October 1986.

1999
Ennore's new port, north of Chennai, gained major port status and was incorporated as Ennore Port Limited, the first major port in India run as a company.
2005
Sethusamudram Shipping Canal Project inaugurated
Prime Minister Manmohan Singh launched work on a shipping canal between India and Sri Lanka, a project later stalled by the Ram Setu dispute.

2017
Ennore oil spill after tanker collision
Two tankers collided off Kamarajar Port in Ennore, and the resulting oil spill spread along the north Chennai coast.
2023
Passenger ferry between Nagapattinam and Kankesanthurai begins
A high-speed passenger ferry began sailing between Nagapattinam in Tamil Nadu and Kankesanthurai in Sri Lanka's Jaffna district.