Propeller Polishing at Magdalla Port
Mirror finish, measurably lower fuel burn
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Tell us the vessel, the port and the window. Scoped reply, usually the same working day.
Cleanship Marine carries out underwater propeller super polishing at Magdalla Port, Gujarat. Divers work the blades through a multi-stage sequence to a Class A mirror finish, removing fouling, calcareous deposits and accumulated surface roughness while the vessel lies alongside or at anchor.
The propeller is the highest-leverage surface on any vessel calling at Magdalla: it runs at high relative velocity, so roughness there costs disproportionately more than the same roughness spread over the hull. For the handysize bulk carriers, general cargo ships and coastal tankers working this port, polishing is the shortest route to a measurable fuel saving.
What it gets you
- Blade roughness removed where it costs the most, at the highest-velocity surface on the vessel
- Propeller efficiency restored between dockings without off-hire
- Cavitation erosion and edge damage documented before it becomes a repair item
- A finish record that supports hull and propeller performance monitoring
Working conditions at Magdalla
Magdalla lies on the Tapi estuary, so it combines a strong tidal stream with river silt and limited depth — dive windows are short, tied to the tide and worked in near-zero visibility. The depth restriction does have one upside for the diving side: the tonnage calling here is smaller, so any single hull job has a manageable wetted area. Larger vessels are worked at the outer anchorage instead of alongside.
- Where we work
- River jetties · Outer anchorage
- Vessels we see here
- Handysize bulk carriers · General cargo ships · Coastal tankers
What we do at Magdalla
- Blade condition assessment covering both faces, the leading and trailing edges and the tips
- Multi-stage polishing sequence worked down to a Class A mirror finish
- Boss, hub and fairing cone cleaned, with rope guard and seal area inspected
- Edge damage, cavitation erosion and any deformation photographed and reported rather than polished over
- Diving permission cleared with Gujarat Maritime Board, and the shaft confirmed immobilised with the master before the dive
- Before-and-after video and a written finish record for the performance file
Planning the window at Magdalla
The south-west monsoon governs the calendar at Magdalla 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. River current and sediment govern the method here: dives are cut to the slack either side of the tide, the team works by touch in near-zero visibility, and the vessel has to be properly secured against the stream before anyone enters the water.
Work is taken at the river jetties and outer anchorage, and which of those a vessel ends up at changes the dive plan more than the season does. Teams mobilise via Surat (STV) or Vadodara (BDQ), 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 Magdalla
Dry bulk handling here puts cargo dust into the water around the berths and anchorage. It settles on horizontal surfaces and packs into sea chest gratings and inlet openings, so inlet and grating clearance is routinely a larger part of the job at Magdalla than owners budget for.
River water changes what we find. Freshwater influence shifts the species mix and the growth is often softer but covers more of the hull, and sediment settles over the top of it on horizontal surfaces — two different problems on the same plate.
Standard scope of work
Included as standard on every propeller polishing attendance, wherever the vessel is. Anything outside it is quoted separately and flagged before mobilisation, never added afterwards.
- Deposit removal
- Calcareous growth, shell and hard deposits removed from both blade faces without gouging or scoring the blade surface.
- Progressive polishing
- Successive abrasive grades work the blade from rough to fine, finishing at a Class A mirror surface across the full blade area.
- Edge finishing
- Leading and trailing edges dressed to restore profile and remove the roughness that seeds cavitation.
- Boss and hub
- Boss, hub and rope guard cleaned, with stern tube seal condition inspected and reported.
How we deliver it at Magdalla
- 1
Scope and vessel details
Tell us the vessel, her particulars, the coating specification and the window at Magdalla. 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 Gujarat Maritime Board, 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 Magdalla
Divers, compressors, brush carts and cameras mobilise via Surat (STV) or Vadodara (BDQ). Where a vessel is also calling at Hazira, 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 propeller polishing 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.
Magdalla Port at a glance
- UN/LOCODE
- INMDA
- Port type
- State Port
- State
- Gujarat
- Country
- India
- Water body
- Tapi estuary, Gulf of Khambhat
- Port authority
- Gujarat Maritime Board
- Main cargoes
- Coal, Steel and scrap, Timber, Edible oil, General cargo
- Crew mobilisation
- Surat (STV) / Vadodara (BDQ)
- Services here
- Hull Cleaning, Hold Cleaning and Tank Cleaning
Frequently asked — Propeller Polishing at Magdalla
Do you provide propeller polishing at Magdalla Port?
Yes. Cleanship Marine works Magdalla Port (INMDA) in Gujarat, India, covering the river jetties and outer anchorage. Teams mobilise via Surat (STV) or Vadodara (BDQ) with the full spread.
Can propeller polishing be done while the vessel works cargo at Magdalla?
Usually yes, but the constraint is the river rather than the cargo plan. Diving is held to the slack either side of the tide, so the real question is whether the vessel's stay covers enough slacks. The vessel stays on hire throughout, and there is no diversion and no dry dock. We scope against the conditions at Magdalla and tell you honestly whether the window you have is enough.
Do you need a diving permit from Gujarat Maritime Board?
Yes, and we obtain it. Diving permission from Gujarat Maritime Board, 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 Magdalla?
Visibility at Magdalla Port is effectively nil for most of the year, 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 propeller polishing on at Magdalla?
Handysize bulk carriers, General cargo ships and Coastal tankers — the traffic at Magdalla Port runs to coal, steel and scrap, timber, 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 Magdalla?
Divers and equipment mobilise via Surat (STV) or Vadodara (BDQ). 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 Hazira or Dahej, one mobilisation is often sized to cover both.
What does propeller polishing at Magdalla cost?
It depends on the vessel's dimensions and wetted area, the fouling state found, the coating specification and the working window available at Magdalla. 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 Magdalla and you get a scoped price, usually the same working day.
Propeller Polishing at Magdalla Port.
Tell us the vessel, her ETA at Magdalla and the window. You get a scope, a crew size and an honest duration — usually the same working day.