Naval Boat Building Yard (NBBY) is a shipyard of the Sri Lanka Navy situated in Welisara that produce small and specialist watercraft for the Sri Lanka Armed Forces, state institutions and civilians.

The Boatyard was originally founded in 2000 as the Inshore Patrol Craft Construction Project (IPCCP) for the fabrication of small attack boats including swarm boats to combat the terrorist activities in North and East during the Sri Lankan Civil War.

However with the Naval Boat Building Yard introducing the Arrow-class the asymmetric tactics of the Sea Tigers were no longer effective.

[1][2][3] With the end of the war the NBBY has further expanded and have also exported boats to foreign militaries such as Nigeria and Seychelles.

[4][5][6] This list includes notable watercrafts built by the boat building yard.