bids are invited for bay of bengal northern portion krishnapatnam to bassein river , kochi cochin to vishakhapatnam , bay of bengal southern portion , manappad to setukkarai , kanyakumari to pamban , kanyakumari to colombo , southern coast of sri lanka , approaches to hugli river , approaches to chandrabhaga , approaches to gopalpur , approaches to dhamra point , mamallapuram to point pudi , palk strait , palk bay eastern portion , palk bay western portion , approaches to the sandheads , gopalpur to paradip , kalingapatnam to gopalpur , sacramento shoal to kalingapatnam , ramaypatnam to sacramento shoal , chennai to ramayapatnam , point calimere to chennai , approaches to palk bay , chennai to kalingapatnam , valinokkam anchorage veppalodai anchorage , tuticorin harbour approaches to tuticorin , approaches to chennai , approaches to visakhapatnam , cuddalore anchorage , machilipatnam anchorage , royapur crossing to calcutta docks , nagappattinam anchorage , kakinada anchorage kakinada port , hugli river gasper channel to haldia , hugli river haldia to kukrahati reach , approaches to dhamra river , approaches to tirukkadaiyur port , chemplast sanmar cuddalore terminal , rameshwaram to adam bridge , approachs to paradip total quantity : 41