Vietnamese ambassador to India, Ton Sinh Thanh said few weeks back that $100 Mn credit line by India is being used to build 4 boats. This was in response to the so called Brahmos sales and he did not say anything more.
What i understand is it will be first a combination for Brahmos and Kh35 UranE for the boats The missiles will have a mix of AshM and LACM.
@Carlosa
folks in Vietnam government had informally requested for a modified Block III but actually its known as Block IV as per developmental block chart for India. Its a LACM variant with steep dive, GPS, GLONASS, IRNSS capable with a surround capability to hit post steep diving to well protected deep sites . In simple words, its designed for bases where HV stuff is much deeper inside and protected by natural formations be it mountain or a submarine base. This one is a true blue 550 km+ in Hi-Med profile and a overall 600 km above in all hi hi flight path.
Unfortunately, owing to MTCR restrictions i dont think this will be accepted. On top, Block IV planned production and deployments is already tied up with IA for some good time.
You folks might get Brahmos -A the air launched version for Su 30 MK2s instead of the requested LACM. That will be more easier.
It all will depend over time and success of Brahmos A launch test (twin for land and moving ship) later this year.