Underwater Hull Cleaning at Chennai Port
Full hull cleaned in the water, vessel stays on hire
Get a quote
Tell us the vessel, the port and the window. Scoped reply, usually the same working day.
Cleanship Marine provides underwater hull cleaning at Chennai Port, Tamil Nadu, working the Bharathi Dock and Jawahar Dock berths, Ambedkar Dock. Commercial dive teams remove slime, weed and shell growth from the vertical sides, flat bottom, bilge keels, sea chests and niche areas with the vessel afloat and on hire — no dry dock, no diversion, no off-hire.
Chennai is the largest container port on India's east coast and the automobile gateway for the southern manufacturing belt. Liner container ships and car carriers work to fixed rotations here, which makes hull cleaning and propeller polishing a scheduled item that has to fit inside an existing cargo window rather than extend it.
What it gets you
- Hydrodynamic smoothness restored before fouling reaches the calcareous stage that damages coating
- Fuel and emissions penalty from drag reduced without taking the vessel off hire
- Documented condition record for the technical file and the next docking specification
- Sea chests and inlets cleared, protecting cooling water flow
Working conditions at Chennai
Chennai is an artificial harbour behind long breakwaters, so work alongside is sheltered from the open Bay of Bengal and normally runs straight through cargo operations without touching the berth window. Visibility inside the basin is moderate and drops after heavy rain runs off the city. The north-east monsoon from October to December brings the swell and cyclonic weather that governs the outer anchorage, and berth pressure means dive slots at Chennai are often taken overnight.
- Where we work
- Bharathi Dock and Jawahar Dock berths · Ambedkar Dock · Outer anchorage
- Vessels we see here
- Container ships on liner rotations · Pure car and truck carriers · General cargo ships
What we do at Chennai
- Pre-clean fouling survey to establish coverage, growth type and coating condition before any tool touches the hull
- Brush cart cleaning of the flat bottom and vertical sides, with brush hardness selected against your antifouling specification
- Hand cleaning of bilge keels, rudder, stern frame, thruster tunnels, anodes and the niches a cart cannot follow
- Sea chest gratings and inlet openings cleared of growth and debris to restore cooling water flow
- Diving permission cleared with Chennai Port Authority and the terminal before mobilisation
- Before-and-after video and stills, with a written report on coating condition and anode wastage
Planning the window at Chennai
The north-east monsoon governs the calendar at Chennai Port, roughly October to December. The Bay of Bengal also carries cyclone risk in April to June and again from October to December, so an anchorage attendance on this coast is planned with a standby allowance rather than a single fixed date. Because the harbour is sheltered, work here normally runs alongside or at a protected anchorage and can proceed in parallel with cargo operations rather than competing with them for the berth window.
Work is taken at the Bharathi Dock and Jawahar Dock berths, Ambedkar Dock, outer anchorage, and which of those a vessel ends up at changes the dive plan more than the season does. Teams mobilise via Chennai (MAA), so give us the ETA as early as you have it — the travel is the flexible part, the approvals and the working window are not.
What we typically find at Chennai
Container tonnage on a fixed rotation shows the familiar pattern: light slime over most of the vertical sides, with the real accumulation in the flat bottom, the bilge keels and the niches where flow is slowest. Those are the areas that cost fuel and the ones a quick clean tends to skip.
Shelter is a mixed blessing for a hull. The same calm that makes the port easy to work in is still water, and still water grows fouling faster than an exposed berth does.
Standard scope of work
Included as standard on every underwater hull cleaning attendance, wherever the vessel is. Anything outside it is quoted separately and flagged before mobilisation, never added afterwards.
- Fouling survey
- A pre-clean dive establishes fouling type, coverage and severity, and confirms coating condition so the correct tooling is selected.
- Flat bottom and vertical sides
- Brush cart cleaning of large areas, removing slime, weed and shell growth to restore surface smoothness.
- Niche areas
- Hand cleaning of bilge keels, bow thruster tunnels, rudder, stern frame, anodes and other niche areas where fouling concentrates.
- Sea chests and gratings
- Sea chest gratings and inlet openings cleared of growth and debris to restore cooling water flow.
- Documentation
- Underwater video and stills before and after, with a written report covering coating condition and anode wastage.
How we deliver it at Chennai
- 1
Scope and vessel details
Tell us the vessel, her particulars, the coating specification and the window at Chennai. We come back with a defined scope, a crew size and a duration we will stand behind. Where the conditions here will not support what has been asked for, we say so at this stage rather than after mobilisation.
- 2
Permits and approvals
Diving permission is obtained from Chennai Port Authority, along with terminal approval where the berth requires it and any environmental clearance for in-water work. This is handled by us, not left with the agent to chase.
- 3
Mobilisation to Chennai
Divers, compressors, brush carts and cameras mobilise via Chennai (MAA). Where a vessel is also calling at Ennore, one mobilisation is normally sized to cover both.
- 4
Safety setup and the dive
The vessel is secured for diving — main engine, shaft and thrusters immobilised, sea suctions confirmed shut, permit agreed with the master. Teams work under surface supervision with continuous diver communications and video throughout.
- 5
Report and handover
A completion report covering underwater hull cleaning is issued with before-and-after imagery, coating and anode condition and anything found that you should know about. The findings are discussed with the vessel rather than emailed and forgotten.
Chennai Port at a glance
- UN/LOCODE
- INMAA
- Port type
- Major Port
- State
- Tamil Nadu
- Country
- India
- Water body
- Bay of Bengal
- Port authority
- Chennai Port Authority
- Main cargoes
- Containers, Automobiles and RoRo, General and project cargo, Granite
- Crew mobilisation
- Chennai (MAA)
- Services here
- Hull Cleaning and Hold Cleaning
Frequently asked — Underwater Hull Cleaning at Chennai
Do you provide underwater hull cleaning at Chennai Port?
Yes. Cleanship Marine works Chennai Port (INMAA) in Tamil Nadu, India, covering the Bharathi Dock and Jawahar Dock berths, Ambedkar Dock, outer anchorage. Teams mobilise via Chennai (MAA) with the full spread.
Can underwater hull cleaning be done while the vessel works cargo at Chennai?
Yes, in most cases. The harbour is sheltered enough that divers work alongside while cargo operations continue, and neither holds the other up. The vessel stays on hire throughout, and there is no diversion and no dry dock. We scope against the conditions at Chennai and tell you honestly whether the window you have is enough.
Do you need a diving permit from Chennai Port Authority?
Yes, and we obtain it. Diving permission from Chennai Port Authority, terminal approval where the berth requires it, and any environmental clearance for in-water work are arranged as part of the job rather than left with the agent. The master's permit to work and the immobilisation of machinery are agreed on board before anyone enters the water.
What is underwater visibility like at Chennai?
Visibility at Chennai Port is moderate, and it drops further around active bulk handling and after heavy rain, and the north-east monsoon sets the outer limits of the calendar. How the tide and sea state shape the dive plan is set out in full in the working-conditions section on this page.
Which vessels do you carry out underwater hull cleaning on at Chennai?
Container ships on liner rotations, Pure car and truck carriers, General cargo ships — the traffic at Chennai Port runs to containers, automobiles and roro, general and project cargo, so those are the profiles we see most. The scope is sized to the vessel, not to a standard package.
How quickly can a team mobilise to Chennai?
Divers and equipment mobilise via Chennai (MAA). Give us the ETA and the window and we will confirm what is achievable rather than promise a date we cannot hold. Where the vessel also calls at Ennore or Krishnapatnam, one mobilisation is often sized to cover both.
What does underwater hull cleaning at Chennai cost?
It depends on the vessel's dimensions and wetted area, the fouling state found, the coating specification and the working window available at Chennai. We would rather scope it properly and give you a specific figure than quote a headline rate that changes once the work starts. Send the details and the window at Chennai and you get a scoped price, usually the same working day.
Underwater Hull Cleaning at Chennai Port.
Tell us the vessel, her ETA at Chennai and the window. You get a scope, a crew size and an honest duration — usually the same working day.