Yes, Indian naval designers used a time machine in 1994-95 to go to the future & copy the design of a Russian frigate which was designed after 1997.
And even then, the hull-form is different from the Talwar...
Can't expect better logic from 2-USPTO-
patent- a-year LDC folks.
Here is an excerpt from the
official history of Indian Navy, written by Vice Admiral GM Hiranandani. He quotes
Rear Admiral Vaidyanathan, Project Director for P17 Frigate.
"At the same time, the design team set to work on developing the sleek lines of the new hull form. While a new BMT software became available sometime later for the hull lines, much work had already been progressed by then, using the naval architect’s traditional battens and lead weights, to evolve the lines of Project 17. Even though this old and traditional method was moving towards extinction with the birth of the Project 17 hull form, it did give that drawing board flexibility to tweak the lines using the drawing office expertise still available for this kind of specialist design work. The concept design options were presented to the naval staff in the first quarter of 1994 and were approved within few days.
Model Tests.
Having developed the hull form and preliminary propeller design, hydrodynamic model tests were ordered at the Netherlands model test basin-MARIN.
In a slight departure from earlier designs, a conscious decision was made in the very beginng into give a relatively sharp turn to the hull sections around the bilge for improved roll damping and have a generally flared hull form for increased stealth and high water plane area for good sea keeping. The model tests of the new hull form began in July 1995. As the project officer of P17, I was deputed to MARIN to participate in the tests and refined the appendages design based on test results. The model tests showed excellent hull performance. The powering results were within 2½% of DND’s predictions.
The resistance of the appendages was the lowest that one could achieve owing to the designed shaft line with lol rake and the flow adapted orientation of the shaft brackets. The sea keeping performance was seen to be exceptionally good meeting the stringent performance envisaged in the Staff Requirements. The roll performance was also exceptionally good and even better compared to some previous larger designs."
From "Transition to Guardianship-The Indian Navy 1991–2000" (2009)
But we should believe some butt-hurt Bangladeshi troll than the very project director of P17 frigate program
@Nilgiri....
I would say that is Project 15A/B destroyers.
Maybe you didn't knew that Shivalik Class has been superseded by Next gen P17A with following systems.
Sensors and processing systems:
- IAI EL/M-2248 MF-STAR S-band AESA multi-function radar (being localised by BEL)
- Unknown VSR (BEL-SAAB JV maybe)
- BEL HUMSA-NG bow sonar (indigenous)
- BEL EMCCA combat management system (indigenous)
Electronic warfare
& decoys:
- BEL Ajanta EW Suite (indigenous)
- NSTL Maareech ATDS (indigenous)
- Kavach chaff decoy system (indigenous)
Armament:
- 4 × 8-cell VLS, for a total of 32 Barak 8 missiles (Joint Venture)
- 1 × 8-cell UVLM for 8 BrahMos missiles (Joint Venture)
- 1 × 76 mm gun Oto Melara SRGM (produced at BHEL Haridwar)
- 2 × AK-630 CIWS (made at OFB)
- 4 × 533 mm Torpedo tubes (indigenous, made by L&T firing Indigenous torpedos)
- 2 × IRL anti-submarine rocket launchers (localised, made by L&T)
And more of it is coming... Including Desi equivalent of VL-ASROC.
Shivalik uses licence produced SEMT Pielstick designs (Kirloskar) .So does Chinese Type 054A.
Similar story with the 76 mm gun with Chinese & Indian frigates.
What's the difference here ?
This is a Korean frigate your navy uses, tell me about the Korean designed weapon/sensor systems used here.
https://en.m.wikipedia.org/wiki/BNS_Bangabandhu
We are have already exported 105 metre long OPV, 2300 tonne Offshore Patrol Vessel to Sri Lanka.
View attachment 504106
http://www.colombopage.com/archive_18A/Mar26_1522077053CH.php
And we are competing for global naval tenders with our designs.
GRSE unveils design proposal for Brazilian corvette programme
Nothing stopped us from selling our Sonars & torpedoes to Myanmar.
https://www.indiatoday.in/pti-feed/...o-to-be-exported-to-myanmar-896368-2017-03-24
And pray tell me, how many countries can build marine propulsion systems ?
GTs ? US, UK, Ukraine. China uses localised Ukrainian designs & Russians are struggling to develop a replacement for Ukrainian GTs.
Low speed diesel engines ? We already have JVs to manufacture them in India.
Rolls-Royce and Goa Shipyard Limited agree to manufacture MTU engines in India
Same with gearboxes- Elecon/ Walchandnagar/ Kirloskar Pneumatic makes them.
We can also make 4D Active phased array for light frigate application almost fully indigenously (starting from GaAs /GaN MMICs)- land based versions already exist. We have our own naval radars already in service (on Kamorta class).
View attachment 504091
So basically
we can provide our own designs, steel, radars, Sonars, EW suite, license produced engines, torpedos & launchers, missiles, communication systems, CIWS, gearboxes, auxillary systems.
Nothing different from BNS Bangabandhu deal.
Brahmos is an Indo Russian JV, based on Yakhont's propulsion system & airframe. We have developed our own systems for it & manufacture the missiles in India with 70-80% indigenous content.
As I said earlier we are not Bangladesh that doesn't have a single certified aerospace vendor.
Meanwhile enjoy this pic of Indian developed X-band seeker used in Brahmos.
View attachment 504093
Is this all you have to say after running away ??