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Nilgiri

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One of my favourite corvette archetypes are now starting to get retired:


Older pic:
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The class would be succeeded by similar kora class (one of which I had pleasure of boarding during its stopover in Singapore)

This class at the time in turn replaced the Soviet petya class (which were found to have issues) in service with IN then.

The Petya is one example of what I mentioned earlier (the overlap in corvette vis a vis frigate)


It depends (in the strict Naval convention in use these days) much more on endurance (point 3's expected mission parameters) than strict tonnage....to better delineate what is a corvette vs frigate. These vary a bit from navy to navy (given each country's size, territorial water, coastline, EEZ, threat profile etc are all different and impact on definitions of long, mid and short range/endurance in the planning and war gaming)

This is how one of most well-read mentors I know explained it to me some time back.

There leads to quite some overlap between corvette and frigate by tonnage alone.

Consider kamorta corvette (3300 tons) vs type 053 frigate (1700 tons) for example.

But kamorta is a corvette because its bulk derives from payload+weapons based for its planned expected mission profiles (of less range/endurance assigned to frigates in the navy).


...in that it had light frigate role with USSR, but was established as (Arnala class) corvette in Indian navy.

@Yasar @Anmdt @UkroTurk @Isa Khan @AlphaMike et al.
 

Gessler

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INS Arnala, the first of 16 shallow-water ASW corvette/craft launched at GRSE (two designs being built, 8 each).

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Nilgiri

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Launch of ‘Androth’, Second Ship of ASW SWC (GRSE) Project on 21 March 2023 at M/S (GRSE), Kolkata​

‘Androth’, the second of 08 x ASW Shallow Water Craft (SWC) Project, being built by M/s GRSE for Indian Navy was launched on 21 March 2023 at M/s GRSE, Kolkata. The ship made her first contact with water of Hooghly River at 1430 Hrs at the Launch Ceremony presided over by VAdm Dinesh K Tripathi, FOC-IN-C (West).

In keeping with the Naval traditions, Smt Shashi Tripathi launched the ship to the chanting of invocation from Atharva Veda. Mr Arun Lal, former Indian cricketer and head coach of Bengal cricket team, was the Guest of Honour for the ceremony. The ship has been named Androth to signify the strategic maritime importance accorded to the island of Androth, located about 170 Nm north-west of Kochi, in the Union Territory of Lakshadweep.

Contract for building eight ASW SWC ships was signed between MoD and Garden Reach Shipbuilders and Engineers (GRSE), Kolkata on 29 April 2019. Arnala class of ships will replace the in-service Abhay class ASW Corvettes of Indian Navy and are designed to undertake anti-submarine operations in coastal waters, Low Intensity Maritime Operations (LIMO) and Mine Laying operations including subsurface surveillance in littoral waters.

The ASW SWC ships are 77.6 m long, have a displacement of 900 tons with a maximum speed of 25 knots.

Launch of two ships of the same class in a span of three months reinforces our resolve towards indigenous shipbuilding as part of Prime Minister’s vision of ‘AatmaNirbhar Bharat’. The first ship of the project is planned to be delivered to Indian Navy by December 2023. The ASW SWC ships will have over 80% indigenous content, thereby ensuring that large scale defence production is executed by Indian manufacturing units, generating employment and capability enhancement within the country.

Launch of ‘Androth’, Second Ship of ASW SWC (GRSE) Project on 21 March 2023 at M/S (GRSE), Kolkata


Launch of ‘Androth’, Second Ship of ASW SWC (GRSE) Project on 21 March 2023 at M/S (GRSE), Kolkata
 

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