The officer of the rank of commander reportedly inhaled a large amount of the toxic gas and was hospitalised along with several other injured personnel on board the warship.
Submarine Kolkata is still under construction at Mumbai’s Mazgaon dockyard and was due to be commissioned this month.
The Navy said in a statement, “(INS Kolkata) being built by Mazgaon Dockyard Limited (MDL), while undergoing machinery trials, had a malfunction in its Carbon Dioxide unit, leading to gas leakage. One naval officer and some MDL personnel were affected and have been hospitalised.”
The incident comes on a day when the Navy said that human error led to the fire on board the Sindhuratna. The Navy’s probe report mentioned “deviation from standard operating procedure”. Sindhuratna was one of the Indian Navy’s ageing submarine fleet.
The incident forced Admiral DK Joshi to resign as Navy Chief as it was the latest in a series of incidents involving India’s warships.