The approximate total length of the coastline of the mainland of India, Lakshadweep Islands and Andaman & Nicobar Islands is:

Correct option is B

The correct answer is (b) 7516.6 km

Explanation:

• The traditionally accepted length of India’s coastline is approximately 7,516.6 km, including mainland and island coastlines.

• The mainland coastline is about 6,100 km, while Lakshadweep and Andaman & Nicobar Islands together contribute about 1,416.6 km.

• This value is based on older Survey of India data and continues to be used in NCERTs and most competitive examinations.

• In April 2025, the coastline was officially revised to 11,098.81 km by the National Hydrographic Office in coordination with the Survey of India.

• The revision used modern GIS tools and high-resolution High-Water Line (HWL) data, capturing detailed coastal features like bays, estuaries, and inlets.

Information Booster:

• The revised coastline was approved by the Coastal Protection and Development Advisory Committee (CPDAC) and notified by the Ministry of Ports, Shipping and Waterways on 29 April 2025.

• The updated measurement improves maritime planning, disaster management, and coastal infrastructure development but does not affect CRZ boundaries, which are based on High Tide Line (HTL).