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Title: Application of geological and geophysical methods in marine archaeology and underwater explorations

Project Leader:
Vora, K.H.

Scientific Achievements:

3. Goa

The ancient and medieval ports of Goa, particularly Gopakapattana, played an important role in the maritime history of the west coast of India. Goa's strategic position on the west coast, navigable wide rivers and natural harbours must have played an important role in maritime activities from the earliest times. Shipwreck sites off Goa provide crucial information about trade and commerce of Portuguese period.

Shipwrecks are the material remains of the boats and ships. Its study helps to understand the technical achievements and interactions of people in the past. Shipwreck archaeology is the larger field of the nautical archaeology as a whole. Shipwrecks contain clues of maritime heritage.

Exploration of shipwreck at Sunchi reef, near Amee shoal, around 2 km away from Marmagao port, has revealed remains of a shipwreck in 3 to 6 m water depth. The important findings include a barrel of a hand gun, Chinese ceramics, sherds of Martaban pottery (stone ware), elephant tusks and Hippopotamus teeth, a number of dressed granite blocks, four guns - each one 2 m long, a cast iron cannon ball, lead pieces, copper vessel and strip, stone and clay bricks, pieces of glass bottles and door knocker. Granite blocks and guns are overgrown with barnacles and other sea organisms. These discoveries suggest that the ship might have arrived from Portugal via Africa to Goa and grounded due to lack of knowledge of the topography of the area. TL dating of the pottery suggests that the wreck belonged to early 17th century AD of Portuguese period. The shipwreck findings show the evidence of the Indo-Portuguese trade and commerce.


Sunchi Reef site map

Photos from Sunchi Reef wreck site (left to wright - below):

Row 1: Brass barrel of a handgun, Martaban Pottery bases, Martaban Pottery rims
Row 2: Broken bases (round & square) glass bottles, Stone bricks (?), Chinese ceramic base and lid
Row 3: Lead pipe and pieces, Elephant tusk, Hippopotamus teeth
Row 4: Iron gun, granite blocks





   


St George's Reef

The wreck sites of Sunchi Reef and St. George's Reef and the artefacts retrieved from these places provide clinching proof that Goa waters possess rich potential for study of shipwreck archaeology.

Another shipwreck was explored at 15 m water depth in St George's Reef, on the eastern side of Grande Island. The findings include various types of artefacts such as inscribed chimney bricks, roof, ridge and floor tiles, the latter being the most numerous; a Corinthian capital for a column; and a drum. The bricks are made of white clay, moulded and inscribed, 'Basel Mission Tile Works 1865' on the obverse; the reverse is plain. Some of the floor tiles are stamped like the bricks but on the reverse, and have four deep grooves; the obverse is plain. The Corinthian type of capital is hollow inside and one end is closed. The timber of the ship is also noticed in between the rocks and it could be a part of the ship's keel. The anatomical analysis of timber shows that it belongs to 'Lagerstroemia Lancealata' species for which the trade name is benteak. The C14 dating of the timber suggests that the St George's Reef wreck is about 115 years old and therefore occurred in the latter part of the 19th century. Basel Mission Company had the tile factories in the Mangalore region of Karnataka and exported the products to East Africa, Aden, Basara, Australia and Southeast Asian countries in bygone period.

The underwater metal detector survey followed by diving, in Baga waters has revealed a steel hulled wreck in 5 to 6 m water depth opposite to the seminary located on a hillock. The wreck is buried in the sediment and a small part is visible. Further, underwater explorations brought to light stone anchors from Sunchi Reef, Grande Island and Baga waters and a number of iron anchors have been retrieved from Aguada waters.
   
Onshore exploration of Gopakapattana reveals structural remains of a huge wall of laterite blocks parallel to river Zuari and cross walls which are perpendicular to the main wall at three places. Excavations in intertidal zone across the main wall yielded the outward six steps and these are attached to the main wall. An earlier excavation has yielded remains of a street known as Rajvidhi of Kadamba period. A layer of reddish sandy deposit containing shingles of laterite of 15 cm thick seems to be the remains of continuation of the ancient Kadamba Royal road, running between Ela (Brahmapuri) and Gopakapattana port.

Laterite wall (above), blocks (below left) and steps (below right) at Gopakapattana


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