The Indian Navy is reportedly constructing two Kamorta-class anti-submarine warfare corvettes, using carbon fibre composite material imported from Sweden.
The carbon fibre material, imported from Swedish stockyard Kockumo, is lighter than stainless-steel, which is traditionally used to construct warships. Using the new material will decrease the total weight of the vessel and increase its stealth capability.
The vessels, named INS Kiltan and INS Kavaratti, are being built by defence PSU Garden Reach Shipbuilders and Engineers in Kolkata.
GRSE director shipbuilding, commodore Ratnakar Ghosh said: "These are the first ships where such a technology is being used in India.
"Stealth is the most important feature of composite material as it is less susceptible to detection, unlike steel."
The composite material will be used to construct the superstructure of the vessel, while the remaining sections, including the ship’s hull, will be built using stainless steel.
Ghosh added: "The weight of the superstructure should be around 30% less. The cost is higher but that is offset against the long term advantages it offers."
The composite superstructure will be imported from Sweden and will be assembled and integrated with the main hull under supervision of Swedish experts in Kolkata, the news agency reported.
INS Kiltan and INS Kavaratti will also be equipped with indigenous weapons and sensors, and will be capable of cruising at a speed of 25k.
The warships are expected to be delivered to the navy in 2017.