"Since submarines fight under the sea, not many people know about its functioning. So we have decided to display a model of a Sindhughosh-class submarine during the parade for the first time in Kolkata," Commodore Ravi Ahluwalia, naval officer in-charge of West Bengal, told reporters.
The Russian-made submarine INS Sindhughosh specialises in anti-submarine and anti-surface warfare capabilities and carries all armaments like torpedo and missile.
Besides the submarine prototype, the model of a ship would be part of the R-Day tableau this time.
It is widely known that Bose had escaped from Germany to Japan in 1942 on submarines belonging to the two nations which included a mid-sea transfer from one vessel to another.
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Fittingly, the naval base in Kolkata is also named INS Netaji Subhas.
Noting that submarines are among the country's most economical weapons, Commodore Ahluwalia said it is a very risky business. "Accidents are very few but very fatal," he said.
Meanwhile, in a separate demonstration held off the 'Man O' War' jetty, naval divers who were camping here for the just-concluded Ganga Sagar mela showed how they operate in water to save lives and for other operational tasks.