In August 2005, a repeat order was placed at the same cost for a similar vessel under options clause of the original contract.

They are powered by two SEMT Pielstick 20 PA6B STC diesel engines rated at a combined 20,900 PS or 15,400 kW, each driving a Wärtsilä WCP 5C10 controllable-pitch propeller.

Sankalp-class ships can carry five high-speed boats capable of search and rescue, interception and pollution control missions.

[12] In August 2011, ICGS Sankalp participated in a mission to control an oil spill off the coast of Mumbai.

[19] In June 2015, ICGS Samrat participated in a disaster relief mission to rescue 20 crew members of MV Jindal Kamakshi.