The Northern Coast of Chennai was under heavy threat of erosion. The coast is having lot of engineering Industries, Tamil Nadu electricity plant, housing colonies and road connecting Ennore port. The coast is located North of Chennai Port trust. The initial erosion for a length of 8 km was controlled by constructing sea wall and groin field. After that again erosion was noticed further north of Chennai harbour (13°6′58.24″N, 80°17′59.97″E). The coast is having an estuary far North. The newly constructed Ennore port (13°15′54.94″N, 80°20′10.50″E) is located further north of estuary. Coast is influenced by South West monsoon (June to September) and North East monsoon (October to December). Detailed studies including secondary data desk studies, Satellite imageries, Wave climate and numerical model studies were carried out. The analyses of wave climate indicate the waves approach from south east most of the time. During North East monsoon the waves approach from North East direction. Mike21 numerical model was adopted for study. The desk studies indicate that along shore sediment is predominantly towards North. Based on the preliminary studies, short groins of nineteen numbers were proposed. The net littoral drift that is expected along the coast based on is about 0.35 mm3. The details of proposed groin field and post observations were discussed in detail.