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Setu Samudran Canal project is indefensible on all fronts --- MG Devasahayam (2006)

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Sethu Samudram Canal Project – Indefensible on all Fronts

                                                                                             M.G.Devasahayam (2006)

SSCP : The Background

SSCP is a 153 year dream of Tamils. Commander A D Taylor from Indian Marine planned this SSCP project in the year 1860. In 1952 Sir A Ramasamy [Mudaliar] submitted a proposal and major feasibility report.

As per the present plan, the total length of SSCP would be about 260 km - about 120 km from Tuticorin Port to Adam's Bridge (in Gulf of Mannar), and about 140 km north of Rameswaram from Adam's Bridge to Bay of Bengal channel (in Palk Bay). Overall GOM and Palk Strait [PS] cover an area of 10,500 kms. The canal is being investigated for different drafts (for 9.15 m, 10.7 m and 12.8 m). In general, the canal will have a depth of 12 metres enabling 10,000 to 12,000 GRT vessels to pass through. The Government of India is proposing to dredge a width of 300 meter through 44 nautical miles long stretch. It is estimated that 32.5 million cubic meter sand will be dredged in the Adam's bridge area and around 52 million cubic meters in Palk Strait.

Geographic Location:
Gulf of Mannar [GOM] : The Gulf of Mannar [GOM] falls in the Indo-Pacific region, considered to be one of world's richest marine biological resources. The Gulf has been chosen as a biosphere reserve primarily because of its biological and ecological uniqueness. The region has a distinctive socio-economic and cultural profile shaped by its geography. It has an ancient maritime history and was famous for the production of pearls. Pearl has been an important item of our trade with the Roman Empire as early as the first century A.D., while Rameswaram, with its links in legend to the Ramayana, has been an important pilgrim centre. The region has been and continues to be famous for its production of chank (Indian conch). The GOM is famous for its chanks, although irrational chank fishing has severely depleted the stock. In addition, the biosphere reserve in the area has 17 different mangrove species. The GOM thus constitutes a live scientific laboratory of national and international value. It has 3,600 species of plants and animals that make it India's biologically richest coastal region. It is, of course, specially known for its corals, of which there are 117 species belonging to 37 genera. The GOM is a chain of shoal, called Adam's Bridge. It is an inlet of the Indian Ocean, between South Eastern India and Western Sri Lanka. The GOM is 130 km to 275 km wide and 160 km long. During high tide the seawater would raise to more than 1.2 meters above the sea level. Full of beach ridges, the GOM can be grouped into: (i) Beach ridges south of Vaigai River; (ii) Beach ridges between Kotangudi River and Palar River; (iii) Beach ridges between Palar River and Gundar River system; (iv) Beach ridges between Gundar River and Vaippar River; and (v) Beach ridges south of Vaippar River.

The total water logged land has been calculated to be 5.96 km2. Eight serious of Strand Lines can also be observed, apart from the Sea Cliff and Caves.

Adam's Bridge: Adam's Bridge is a chain of Shoal, nearly seven in all, is 30 km long. Sir Emerson Tennet in his book 'Ceylon' writes -" The barrier known as Adam's Bridge which obstructs the navigation in the canal between Ceylon and Ramad, consists of several parallel ledges of conglomerate and sand dunes, hard at the surface and growing course and soft as it descends till it rests on a bank of sand, apparently accumulated by the influence of current at the change of the monsoons". Also according to geological survey, it is apparent that Miocene Era limestone beds are under the Adams Bridge which connects Jaffna peninsula in Sri Lanka and Rameswaram in India. [Ref: The pre-history of Sri Lanka by S.U.Deraniyagala]. The legends as well as Archeological studies reveal that the first signs of human inhabitants in Sri Lanka date back to the a primitive age, about 1,750,000 years ago and the bridge´s age is also almost equivalent. This information is a crucial aspect for an insight into the mysterious legend called Ramayana, which was supposed to have taken place in tredha yuga (more than 1,700,000 years ago). In this epic, there is a mentioning about a bridge, which was built between Rameshwaram (India) and Srilankan coast under the supervision of a dynamic and invincible figure called Rama who is supposed to be the incarnation of the supreme. This information may not be of much importance to the archeologists who are interested in exploring the origins of man, but it is sure to open the spiritual gates of the people of the world to have come to know an ancient history linked to the Indian mythology.

Palk Strait [PS]: PS is an inlet of Bay of Bengal. The PS is 64 kms to 137 kms wide and 137 kms long. It receives several rivers including Vaigai from India and contains many islands of Sri Lanka.

Nodal Agency:
During 1997 Ministry of Surface Transport made Tuticorin Port Trust [TPT], which celebrated its Silver Jubilee on last 10-07-2004, as Nodal Agency for this project.

Socio-Economic aspects

(a) Government claim

  • Canal will help save 20 per cent of voyage time and increase trips by 20 per cent.
  • The channel will establish a continuous navigable sea route around peninsular coast within the Indian territorial waters, reduce shipping distance by about 254-424 nautical miles and voyage time of about 21-36 hrs as also the attendant operating costs
  • The project will provide employment opportunities and avenues of additional income through establishment of small ancillary industries. The project will also trigger development of coastal trade between the ports south and north of Rameswaram consequently reducing the load and congestion on railways and roadways.
  • Development of minor ports; spurt in export of marine products from the coastal districts; easy movement of coal to thermal power stations.
  • The project will help in saving considerable foreign exchange through reduction in oil import bill and generate revenue income from dues levied on ships transiting the channel, which will add to the national economy.
  • Average time saved per voyage will be 25 hours (average saving in distance 300 nautical miles and speed assumed as 12 knots). Average amount saved per voyage is Rs. 5.36 lakhs (2003)
  • According to the technical feasibility and economical analysis studies carried out by the Shipping Corporation of India, a savings of Rs 80.71 cr. per year is envisaged if the canal passage is free. However, the pilotage and other charges levied have not been taken into account.
  • The channel will be of very great importance from national defense and security point of view.  The revenue from naval and coastal traffic will go up adding to the direct benefit

(b) NGO and Expert contention

  • Revenue-wise the project will not be a profitable one. For example, as per Government of India, the 21-36-hour voyage time can be saved by SSCP. Here we have to look at the following limitations and constraints: a] Only 30 feet draft ships can be allowed to pass through SSCP. b] Ships have to reduce their speed to half, while sailing through SSCP.
  • The anticipated saving of 25 hours of voyage may not materialise as the travel would need more stoppings, comply with many formalities and speed limits. The ships will have to pay royalty. Besides these, traveling in the canal between October and December would not be safe owing to the weather conditions. The canal will not be for all seasons.
  • Practically speaking, a ship will take at least 20-24 hours to cross SSCP. There may not be any net saving in travel time.
  • Ships have to pay toll charges for crossing and a pilot boat with payment is needed to lead the vessel.
  • Former Tuticorin port officials say that hardly 2 or 3 ships would be crossing daily? What kind of revenue will this generate for the project to be viable?
  • There are 138 villages and towns spread in 5 districts through the coastal area from Gulf of Mannar to Palk Strait in Tamil Nadu State. The main livelihood activities of the fishermen residing in the villages adjoining to the coastal area are (i) fishing, (ii) seaweed collection, (iii) ‘chanks’ collection, (iv) coral mining, (v) fire wood collection and (vi) agriculture. If this project is implemented, socio-economic problem will multiply due to unemployment. This has not been factored in the NEERI report.

Environmental and other aspects

These have been dealt with in great detail in many reports, news stories and articles. Some of these however need highlighting. These are:
  • The hydrographic survey of Palk Bay and Palk strait area has been carried out by the National Hydrographic Office only for the period during January - February 2004. The Rapid EIA prepared by NEERI is insufficient and a comprehensive EIA should be conducted in all seasons for at least a year.
  • Sides of the canal cannot be lined or protected by any artificial wall; a strong tidal wave is enough to level the canal.
  • Canal could facilitate movement of fishes and other biota from the Bay of Bengal to the Indian Ocean and vice versa. By this way, the entry of oceanic and alien species into the Palk Bay and the Gulf of Mannar, as also the dispersal of endemic species outside the Palk Bay and the Gulf of Mannar could occur. This could be disastrous for the protected ecosystem GOM.
  • There will be a dredge of sea floor of 12.8 meter deep, 300 meter wide for 2-way traffic. If this happens to be sudden, tilt in the sea bed, may cause numerous violent process like a major change in drift, possible change in gravitational pull
  • Whole SSCP area is biologically rich and rated among the highly productive sea of the World. Project implementation may destruct coral reefs which, in turn, would tend to cause High sea tides, Surges, Hurricane, cyclone etc
  • Even though the NEERI reports deny the existence of archaeological structures under the seabed, these need to be investigated further. Otherwise, after the dredging, there is possibility of loosing the archeological treasures that may be lying beneath the sea.
  • The dangers posed by the project violate the UN Law of Sea Convention, 1982 that deal with Mouths of Rivers, Bays, Conservation of the living resources, Highly Migratory species, Marine Mammals, fishing rights protection, Marine Environment, Archaeological and historical objects.
  • Though the canal may be dug in Indian waters, the project will have significant impact on Sri Lanka. What kind of dialogue has been held with that country?
  • NEERI report suggests strict vigilance of crude oil tankers to avoid oil spill in the sea. No remedial measure suggested if oil spill does happen.
  • NEERI report suggests that a trained pilot or environmental watcher should be on board all the ships to watch marine mammals. This is impractical particularly during night or on rainy / dark cloudy days.
  • Consequent upon the opening up of the petroleum products large number of storage tanks would be set up on the East Coast. This could result in movement of hundreds of small/medium sized oil tankers in the Gulf of Mannar causing serious damage to the flora and fauna.


In short Sethu project in its present form is economically unviable, socially undesirable and environmentally unsustainable

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