GSL/GRSE series of Interceptor Boats are Indian high speed patrol boats assembled by Garden Reach Shipbuilders & Engineers Limited (GRSE), Kolkata and Goa Shipyard Limited (GSL), Vasco da Gama. They were designed by Greek shipbuilder, Motomarine, later on GRSE bought this design. Now GRSE is assemblying it at its shipyard in the Bay of Bengal, whereas GSL is also simultaneously assembling the same boats in its Arabian Sea yard. They are being built as per the contract contracted by GSL and GRSE with Ministry of Home Affairs in March, 2008 for various state marine police under the Coastal Security Scheme. The armoring of the patrol boats is being done by MKU Pvt Ltd.