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Second Kalvari class submarine Khanderi to be launched on Jan 12

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The first Scorpene class submarine, Kalvari, during sea trials. An Indian Navy photo

MUMBAI (PTI): Khanderi, the second Kalvari class submarine, will be launched at the Mazagon Dock Shipbuilders Limited (MDL) in Mumbai on January 12.

Union Minister of State for Defence Subhash Bhamre will preside over the function to initiate the launch of Khanderi (Yard 11876).

The launch will start a trail of events, which will lead to the separation of the submarine from the pontoon on which it is being assembled and its final setting afloat, an official release said.

"India is among few countries in the world which produces conventional submarines. Six submarines are being built at MDL in collaboration with M/s DCNS of France, as a part of Project 75 of Indian Navy. The first submarine of the class (Kalvari) is completing its sea trials and will be commissioned shortly into the Indian Navy," the release said.

Indian Navy's Submarine arm will complete 50 years on December 8 this year. Submarine Day is celebrated every year to commemorate the birth of the submarine arm with induction of the first submarine, erstwhile INS Kalvari, into the Indian Navy on December 8, 1967, it said.

India joined the exclusive group of submarine constructing nations on February 7, 1992, with the commissioning of the first Indian-built submarine, INS Shalki.

MDL built this submarine and went on to commission another submarine, INS Shankul on May 28, 1994. These submarines are still in service today.

Khanderi is named after the Island fort of Maratha forces, which played a vital role in ensuring their supremacy at sea in the late 17th century, the release said.

The state-of-the-art features of this Scorpene class submarine includes superior stealth and the ability to launch a crippling attack on the enemy using precision guided weapons.

The attack can be launched with torpedoes, as well as tube-launched anti-ship missiles, whilst underwater or on surface. The stealth features will give it an invulnerability, unmatched by many submarines.

The submarine is designed to operate in all theatres, including the tropics. All means and communications are provided to ensure interoperability with other components of a Naval Task Force.

It can undertake multifarious types of missions typically undertaken by any modern submarine i.e. anti-surface warfare, anti-submarine warfare, intelligence gathering, mine laying, area surveillance etc.

It is built according to the principle of modular construction, which involves dividing the submarine into a number of sections and outfitting them concurrently.

The equipment is mounted in a special manner and then embarked into the sections. The complexity of the task increases exponentially as it involves laying kilometres of cabling and piping in extremely congested compartments.

All equipment has been installed in the submarine, with 95 percent cabling and piping also being completed.

Pressure testing, setting-to-work and commissioning of various systems of the submarine is presently in progress, and would continue after the launching of the submarine, the release said.

The important safety milestone of vacuum-testing was completed in the first attempt itself, and within a single day on January 5. This matched the record of 'Kalvari', which also completed the Vacuum Test in one go.

Till December, the submarine will undergo rigorous trials and tests, both in harbour and at sea, while on surface and whilst dived.

These trials are designed to test each system to its fullest capacity. Thereafter, she would to be commissioned into the Indian Navy as INS Khanderi.

This would be preceded by the commissioning of Kalvari later this year. The other four submarines will follow in the wake of Khanderi at intervals of nine months.

As per tradition, ships and submarines of the Navy are brought alive again after decommissioning. The first Khanderi was commissioned into the Navy on December 6, 1968 and decommissioned on October 18, 1989.

The launching, and subsequent commissioning of Khanderi marks a generational shift in technology, the Navy statement said.

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