Marine Wing of GSI has more than 100 experienced marine geoscientists, well equipped ocean-going research vessel and coastal launches which are capable of conducting seabed survey. It has surveyed over 95% of the 2,012 million sq km EEZ, including about 1,05,000 sq km of territorial waters of India on reconnoitory scale and has located heavy mineral placer deposits which are exploitable with available technology. Other marine resources identified are lime mud, phosphate rich sediments, calcareous sediments, hydrocarbons, metalliferous micronodules, etc. Marine Wing has gathered vast experience regarding applied studies/survey related to coastal geotectonics and hazards, placer location, port development and is capable to meet the specific demand oriented needs of the sponsor. It continues to pursue research and development in various fields of oceanography.
The Marine Data Centre at Kolkata is a well equipped laboratory of DOD which acts as the central data bank on ocean related geological parameters, collected in course of 400 missions, with need based retrieval system for on line/off line data exchange.
Service Available
Sea bed geological mapping with subsurface data up to 30 m depth along with preparation of geological, geophysical, geochemical and other thematic maps.
Investigation for placer minerals in the continental shelf.
Survey for off-shore structures like single Buoy Mooring Systems (SBM), drilling platforms, jetties, etc.
Survey for development of ports and harbours, laying under water pipe lines, cables, etc.
Survey for selection of sites for disposal of dredge spoils.
Survey in the estuary and coastal areas for non-conventional energy resources.
Environmental Impact Assessment: Pollution studies and evaluation of environmental hazards in near-coastal domains.
Equipments and Machinery
Research Vessel Samudra Manthan
Dual frequency echosounder for depths up to 10000m
Marine proton magnetometer
Oceanographic winch with a pull of 5 tonnes at 95m/min
Hydrographic winch with a pull of 1.5 tonnes at 95m/min
On board Chemical, Petrological and Palaeontological Laboratories
Coastal Launches
9 element towed sparker system with hydrophone streamer on winch
3.5 KHZ hull-mounted sub-bottom profiling systems with EPC Recorder
Marine magnetometer with analog recorder
Record annotator, side scan sonar system
Underwater TV camera; Depth recorder with digitizer
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