Water Jet Fast Attack Craft (WJFAC) INS Tihayu was on Wednesday commissioned into the Indian Navy by Flag-Officer-Commanding-in-Chief of the Eastern Naval Command Vice-Admiral HCS Bisht. The highly manoeuvrable, 315-tonne INS Tihayu is a vessel fitted with three water jet propulsion systems and is loaded with an indigenously-built 30 mm CRN gun.