The Comptroller and Auditor General of India in its report submitted to Parliament said the medium refit of the EKM class submarine was due for commencement in 2001 but was carried out from January 2006 by when the material state of the vessel had witnessed "extensive deterioration".
It noted that though the refit was scheduled to to be completed by January 2009, due to the deficiency in manpower deployed by the Hindustan Shipyard Limited, lack of protection to main line cables, delayed supply of yard materials and modernisation of equipment, the submarine was delivered by the shipyard to the Navy in June this year with Sea Acceptance Trial to follow.
It also noted that the cost of the refit was revised from Rs 629.50 crore (June 2005) to Rs 999.52 crore (August 2013) with additional liabilities of Rs 92.17 crore still being claimed by the yard in September 2015.
"This apart, improper financial management led to the diversion of funds to the tune of Rs 92 crore," the report said.
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In its recommendations, CAG said the planning and commencement of refit of submarines should be as per schedule to avoid excessive exploitation of vessels extension of refitting time.
"The Navy should establish a dedicated Project Team, the expertise of which is available to each indigenous offloaded refit," the report said.
CAG also criticised the Coast Guard and the Defence Ministry for the delay in acquisition of inshore patrol vessels.
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CAG also criticised the defence authorities over the "avoidable expenditure" of Rs 20.80 crore on medium refit-cum- cadet training ship conversion of INS Sujata due to improper evaluation of bids.
It also slammed the Material Organisation, Mumbai, for procuring spares from a foreign firm on 'Propriety Article Certificate' basis, even though the spares were available indigenously at a much lesser cost resulting in extra expenditure of Rs 2.43 crore.