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thyssenkrupp and Mazagon Dock to Overhaul Indian Submarine

Refit in Mumbai Scheduled for Completion in 2021

thyssenkrupp Marine Systems (tMS) has been awarded a Medium Refit and Life Certification (MRLC) contract by Mazagon Dock Shipbuilders (MDL) for the overhaul and modernisation of the Indian Navy submarine INS SHISHUMAR.

The contract includes delivery of new equipment, maintenance of systems and components, as well as on-site technical support and logistical services in the form of documentation, training and spare parts. In addition, it entails a life certification that warrants the operability of the submarine’s pressure hull for the next decade. The refit, which will take place at MDL’s dockyard in Mumbai, is expected to be completed by 2021.

tMS was awarded a contract in 2016 to modernise the HARPOON missile systems of two other submarines of the same class – INS SHALKI and SHALKUL – which is now underway, in parallel with an upgrade to the combat and sensor systems being conducted by Atlas Elektronik, an operating unit of tMS since 2017. 

The SHISHUMAR-class of four submarines was commissioned between 1986 and 1994: the first two boats were built at the HDW shipyard in Kiel (now tMS) and included intensive training of MDL employees so that the second two submarines could be built at the NDL dockyard in Mumbai – the first ever submarines built in India. The class is based on the renowned Type 209 design, with specific modifications including a larger diameter pressure hull, a pressure-resistant bulkhead, and a rescue sphere.

We are looking forward to working with MDL to perform the deep modernisation work to ensure that INS SHISHUMAR remains a very capable combat submarine for the Indian Navy over the years to come. Our experience with the SHISHUMAR-class and the outstanding skills of MDL’s employees are the basis for the return of the submarine back to the Indian Navy in great shape,” commented thyssenkrupp Marine Systems CEO, Dr Rolf Wirtz.


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