Joshi, who had 15 months left in service, resigned on February 26 following the mishap involving submarine INS Sindhuratna in which two Navy officers were killed and several others injured.
In August last year, submarine INS Sindhurakshak sank at the Naval Dockyard in Mumbai, killing 18 personnel on board.
The sudden resignation by Joshi changed the line of succession in the Navy with Admiral Dhowan being appointed the chief today.
Had he retired in August next year as per his tenure, Southern Naval Commander Vice Admiral Satish Soni would have become the next chief.
Under the new circumstances, National Defence College Commandant Vice Admiral Sunil Lamba is expected to succeed Dhowan in May 2016.
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