Sonadia

Sonadia Island is a small island of about 9 square kilometres (3.5 square miles), offshore of the Cox's Bazaar coast in Chittagong Division, Bangladesh.

Sonadia is seen as a potential deepwater port lying on the Bay of Bengal that could serve the landlocked parts of India, Myanmar and China.

Rail connections have yet to be built, and the question of gauge has yet to be resolved as the following gauges are in use or possible: