Shipwrecks contain clues to our maritime heritage. The shipwreck history of Goa is as old as the maritime history, which dates back to 2nd century BC. However, information on shipwrecks prior to the Portuguese period in Goa waters is not available. The NIO has been exploring shipwrecks in the Sunchi Reef and the St George's Reef off Goa since 1989. The findings of the Sunchi Reef include a brass barrel of a hand-gun, Chinese ceramic, Martaban pottery, bases of glass bottles, elephant tusks, hippopotamus teeth, lead pipe, rectangular and square stone bricks (?) and dressed granite stone blocks. Exploration off the St George's Reef has brought to light the remains of a shipwreck containing various types of artefacts such as bricks, tiles, drum, capital, etc, intended for house construction. The Sunchi shipwreck findings are further compared with other Portuguese shipwreck findings found elsewhere in the world. The findings of the St George's Reef show the trade contact of the Basel Mission Company with other parts of the world and its impact on people of coastal Karnataka, West Coast of India.