President APJ Abdul Kalam is set to create history on Monday by becoming India's first head of state to undertake an undersea sortie.
The President would be travelling on the INS Sindhurakshak, a Russian-origin kilo class submarine, for duration of three and a half hours, a naval spokesman said.
"He would also be having lunch with crew members on the submarine," official sources said.
The President would be briefed on the intricacies of submarine operations on board the craft.
Kalam had previously visited a submarine in the harbour when he was scientific advisor to the defence ministry, the naval spokesman said.
Incidentally, Former Defence Minister George Fernandes had spent a night underwater in the INS Sindhuveer submarine during his visit to the Eastern Naval Command centre in May 2003.
In 1988, former Prime Minister Rajiv Gandhi had also visited nuclear submarine INS Chakra at Visakhapatnam.
Kalam's submarine trip comes a day after he undertook a Presidential review of the country's Naval fleet on Sunday morning.
He had a tightly packed schedule for the 2006 Presidential Fleet Review, which originally left him no time to undertake the undersea sortie, the naval spokesman said.