Dredging Corporation of India is the country’s largest dredging fleet operator - it excavates sediment from the bottom of ports, harbours, and waterways so ships can navigate safely. Founded in 1976 as a government enterprise and now owned by four major port trusts, the company has spent nearly five decades building the biggest hopper capacity in India. Its recurring approach is to deploy a fleet of specialised vessels on project-based contracts for port authorities and government agencies, earning revenue by the cubic metre of material moved - a model that once relied on direct nomination from its promoter ports but is increasingly shaped by open competitive bidding. # Business segments A single dredging engine serving ports, the Navy, and inland waterways - one fleet, one service line, multiple customer types - with every contract drawing on the same vessels, crews, and operational backbone. ## 1. Dredging services: the underwater excavation that keeps India’s ports open **DCI deploys ten trailing suction hopper dredgers, two cutter suction dredgers, and a backhoe dredger to dig, move, and place seabed material - it is paid against running bills on project-based contracts, not subscriptions.** - **Maintenance dredging is the bread-and-butter** - roughly 70% of the Indian dredging market involves clearing silt and debris that naturally accumulate in port channels and berths, and DCI held about 81% of that maintenance market as recently as FY22. - **Capital dredging creates new depth** - when a port needs a deeper channel or a new basin carved from virgin seabed, DCI removes that untouched soil, and it commanded roughly 72% of India’s capital dredging work in FY22. - **Land reclamation and beach nourishment add terrain** - cutter suction and trailer suction hopper dredgers pump fill material to raise land levels or replenish eroding coastlines, with shore-pumping reach up to 2,500 metres, turning dredged sediment into new real estate or stable beaches. - **The fleet is both a strength and a constraint** - with 59,000 m³ of total hopper capacity and the ability to dredge 60 million m³, DCI has the largest hopper capacity in India, but the fleet averages more than 23 years old, and some vessels have crossed their useful life, leading to more breakdown days and higher fuel consumption. # Group structure and partners **DCI has no subsidiaries or joint ventures - it is a standalone listed company whose 73.47% promoters are also its largest customers.** - **Promoters are also the biggest clients** - sales to these four related-party ports totalled over ₹552 crore in FY25, meaning the owners are simultaneously the primary source of revenue. - **An indigenous manufacturing pact with BEML** - a three-year MoU signed in March 2024 covers joint design, development, and manufacture of dredger spare parts and eventually whole dredgers, with the possibility of a future joint venture or special-purpose vehicle. - **Academic and institutional tie-ups fill capability gaps** - DCI has partnered with IIT Madras and Indian Maritime University to launch a National Joint M.Tech programme in Dredging Engineering, and has an agreement with the Department of Fisheries to develop fishing harbours and reservoirs through dredging.