All you need to know about Scorpene submarine data leak

India placed an order for six Scorpene-class attack submarines in 2005. The submarines are currently being built at the Mazagon dockyard in Mumbai, with technical help and equipment from French companies DCNS and Thales. The estimated cost of this project is around $3.75bn.

The government is investigating the damage caused to French Scorpene submarines after documents relating to the vessel's combat capabilities were leaked. (Photo: Reuters)

The leak, which was first reported in The Australian newspaper, contains more than 22,000 pages outlining the secret capabilities of six submarines that French builder DCNS has designed for the Indian Navy. (Source: Reuters)

The first submarines was expected to join service by the end of the year, the first step in the navy's effort to rebuild its dwindling fleet.

The massive leak has also raised doubts about the security of DCNS's submarine project in Australia where it won a A$50 billion ($38.06 billion) contract to build the next generation of submarines.

(Source: Reuters)

The leaked documents cover the Scorpene-class model and do not contain any details of the vessel currently being designed for the Australian fleet. (Source: Reuters)