Mumbai: Indian Navy observes 53rd Submarine Day
The 53rd Submarine Day commemorates the maiden unfurling of the naval ensign on the erstwhile INS Kalvari at Riga, Latvia, the release said.

Submarine Day is observed to remember and honour submariners who made supreme sacrifice in their service, it was stated.
The Vice Admiral was by accompanied by Rear Admiral V Srinivas, the senior-most submariner presently posted in Mumbai.
The 53rd Submarine Day commemorates the maiden unfurling of the naval ensign on the erstwhile INS Kalvari at Riga, Latvia, the release said.
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