Chennai: The Indian Coast Guard provided security and surface-to-air escort to 3,741 pilgrims, who travelled from Tamil Nadu and other states to Katchatheevu Island for the annual two-day festival at St Antony’s Church, officials said. The convoy, consisting of a large number of mechanised and non-mechanised boats, was escorted from Rameswaram to the International Maritime Boundary Line on February 27. According to a press release, Coast Guard u…