Thruster Cleaning & Polishing at Kandla Port
Full thrust restored when you need it most
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Tell us the vessel, the port and the window. Scoped reply, usually the same working day.
Cleanship Marine cleans and polishes bow and stern thrusters at Kandla Port, Gujarat. Divers clear the full tunnel bore, polish the blades and hub, and clear the gratings, restoring the manoeuvring thrust that quietly disappears while a vessel sits idle.
Thruster tunnels are the worst fouling trap on a hull — sheltered, still and almost never inspected. That matters more than usual at Kandla, where India's highest-tonnage bulk and liquid gateway keeps vessels stationary in warm water for extended periods and growth builds on tunnel walls, blades and gratings until manoeuvring performance is noticeably down at exactly the moment it is needed.
What it gets you
- Manoeuvring thrust restored ahead of a berthing or a pilotage that needs it
- Tunnel and grating flow cleared, not just the visible blade faces
- Seal, boss and anode condition documented while the divers are already down
- Reduced reliance on tug assistance where thrust had quietly degraded
Working conditions at Kandla
Kandla sits at the head of a creek off the Gulf of Kutch, where tidal streams run hard and the water carries a heavy silt load. Dive windows are worked to slack water and visibility is low, so cleaning is executed by touch with continuous surface supervision and video kept as the record rather than as the diver's guide. Vessels frequently wait at the outer anchorage before a berth slot comes free, and that waiting time in warm gulf water is where most of the fouling is picked up.
- Where we work
- Kandla creek berths · Oil jetties · Outer anchorage
- Vessels we see here
- Product and chemical tankers · Bulk carriers · General cargo ships
What we do at Kandla
- Full tunnel bore cleaned end to end, both openings, including the areas behind the gratings
- Blade and hub polished, with seal and boss condition inspected and reported
- Tunnel gratings cleared of growth and debris so flow is restored, not just the visible face
- Anodes inside the tunnel checked and wastage recorded
- Diving permission cleared with Deendayal Port Authority, with the thruster confirmed isolated and tagged out before the dive
- Video record of tunnel and blade condition before and after
Planning the window at Kandla
The south-west monsoon governs the calendar at Kandla Port, roughly June to September. Swell and reduced surface visibility close most open-water work on this coast for the duration, and the weeks either side are unreliable rather than unusable. The tidal stream and the silt load govern the method here: the working window is slack water, not the working day, and the operation is planned by feel and surface supervision with video kept as the record rather than as the diver's means of navigation.
Work is taken at the Kandla creek berths, oil jetties and outer anchorage, and which of those a vessel ends up at changes the dive plan more than the season does. Cleanship holds an operating base at Kandla, so we can hold a team ready against a shifting ETA rather than committing travel to a date that may move.
What we typically find at Kandla
Liquid and gas tonnage here spends long stretches at the terminal or waiting for a slot, so growth tends to be even and well established across the hull rather than patchy — heavier than the trading pattern suggests, and further along than a speed report alone would indicate.
Silt settles over the growth on the flat bottom and in the niches, which masks the true fouling state until the divers are actually on it. That is why the pre-clean survey here is a real step rather than a formality.
Standard scope of work
Included as standard on every thruster cleaning attendance, wherever the vessel is. Anything outside it is quoted separately and flagged before mobilisation, never added afterwards.
- Tunnel cleaning
- Fouling removed from the full length of the tunnel bore, including the areas behind gratings where growth is heaviest.
- Blade cleaning and polishing
- Propeller blades and hub cleaned and polished to restore surface finish and reduce cavitation-inducing roughness.
- Grating and guard clearance
- Gratings and rope guards cleared of growth, netting and debris that restrict flow or risk fouling the unit.
- Condition inspection
- Blade edges, seals and visible gearcase condition inspected and recorded, with any damage reported immediately.
How we deliver it at Kandla
- 1
Scope and vessel details
Tell us the vessel, her particulars, the coating specification and the window at Kandla. 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 Deendayal 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 Kandla
Cleanship holds an operating base at Kandla, so divers, compressors, brush carts and cameras are on the ground rather than in transit. That is the difference between meeting a window and missing it.
- 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 thruster 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.
Kandla Port at a glance
- UN/LOCODE
- INIXY
- Port type
- Major Port
- State
- Gujarat
- Country
- India
- Water body
- Gulf of Kutch
- Port authority
- Deendayal Port Authority
- Main cargoes
- POL and edible oils, Fertiliser and raw materials, Grain, Salt, Timber, Containers
- Crew mobilisation
- Kandla (IXY) / Bhuj (BHJ)
- Services here
- Hull Cleaning, Hold Cleaning and Tank Cleaning
Frequently asked — Thruster Cleaning at Kandla
Do you provide thruster cleaning at Kandla Port?
Yes. Cleanship Marine works Kandla Port (INIXY) in Gujarat, India, covering the Kandla creek berths, oil jetties and outer anchorage. We hold an operating base at Kandla, so people and equipment are held locally rather than mobilised against a window.
Can thruster cleaning be done while the vessel works cargo at Kandla?
Usually yes, but the tide sets the schedule rather than the cargo plan. The practical question is how many slack windows fall inside the vessel's stay, not what the holds are doing. The vessel stays on hire throughout, and there is no diversion and no dry dock. We scope against the conditions at Kandla and tell you honestly whether the window you have is enough.
Do you need a diving permit from Deendayal Port Authority?
Yes, and we obtain it. Diving permission from Deendayal 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 Kandla?
Visibility at Kandla Port is habitually very low, and often close to nil at the turn, and the south-west 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 thruster cleaning on at Kandla?
Product and chemical tankers, Bulk carriers, General cargo ships — the traffic at Kandla Port runs to pol and edible oils, fertiliser and raw materials, grain, 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 Kandla?
Cleanship keeps an operating base at Kandla, so response here is fast — the constraint is normally the approvals and the working window rather than getting divers and equipment to the port.
What does thruster cleaning at Kandla cost?
It depends on the vessel's dimensions and wetted area, the fouling state found, the coating specification and the working window available at Kandla. 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 Kandla and you get a scoped price, usually the same working day.
Thruster Cleaning & Polishing at Kandla Port.
Tell us the vessel, her ETA at Kandla and the window. You get a scope, a crew size and an honest duration — usually the same working day.