Underwater Hull Cleaning at Dammam Port
Full hull cleaned in the water, vessel stays on hire
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Tell us the vessel, the port and the window. Scoped reply, usually the same working day.
Cleanship Marine provides underwater hull cleaning at Dammam Port, Eastern Province, working the container terminal berths, general cargo and RoRo berths. 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.
King Abdulaziz Port at Dammam is Saudi Arabia's principal Gulf-coast port and the main container and general cargo gateway for the Eastern Province and the industrial belt behind it. Cleanship holds an office here, so this is the shortest mobilisation in the Kingdom.
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 Dammam
Dammam is a sheltered artificial harbour on the Gulf coast reached by a long dredged approach channel, so alongside work is comfortable and the berth window rather than the weather is the constraint. The shamal is the seasonal interruption at the anchorage. What the Gulf takes back is biological: shallow, hot, hypersaline water grows fouling faster here than almost anywhere the fleet trades, and a hull that passed at the last call can be materially fouled three months later.
- Where we work
- Container terminal berths · General cargo and RoRo berths · Outer anchorage
- Vessels we see here
- Main-line and feeder container ships · Pure car and truck carriers · General cargo and project vessels · Handysize bulk carriers
What we do at Dammam
- 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 Mawani, the Saudi Ports 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 Dammam
The shamal governs the calendar at Dammam Port, through the winter months and again in early summer. The shamal is a wind and sea-state problem rather than a rain one: it builds short, steep seas across the shallow Gulf that stop anchorage work while berths stay usable. 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 container terminal berths, general cargo and RoRo berths, 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 Dammam, 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 Dammam
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 Dammam
- 1
Scope and vessel details
Tell us the vessel, her particulars, the coating specification and the window at Dammam. 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
Mawani, the Saudi Ports Authority runs a statutory permit process here, so the lead time is real and the application goes in early rather than on arrival. Diving permission, terminal approval and any environmental clearance for in-water work are handled by us, not left with the agent to chase.
- 3
Mobilisation to Dammam
Cleanship holds an operating base at Dammam, 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 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.
Dammam Port at a glance
- UN/LOCODE
- SADMM
- Port type
- Major Port
- State
- Eastern Province
- Country
- Saudi Arabia
- Water body
- Arabian Gulf
- Port authority
- Mawani, the Saudi Ports Authority
- Main cargoes
- Containers, General and project cargo, RoRo and vehicles, Dry bulk, Livestock
- Crew mobilisation
- Dammam (DMM)
- Services here
- Hull Cleaning and Hold Cleaning
Frequently asked — Underwater Hull Cleaning at Dammam
Do you provide underwater hull cleaning at Dammam Port?
Yes. Cleanship Marine works Dammam Port (SADMM) in Eastern Province, Saudi Arabia, covering the container terminal berths, general cargo and RoRo berths, outer anchorage. We hold an operating base at Dammam, so people and equipment are held locally rather than mobilised against a window.
Can underwater hull cleaning be done while the vessel works cargo at Dammam?
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 Dammam and tell you honestly whether the window you have is enough.
Do you need a diving permit from Mawani, the Saudi Ports Authority?
Yes, and we obtain it. Diving permission from Mawani, the Saudi Ports 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 Dammam?
Visibility at Dammam Port is moderate, and it drops further around active bulk handling and after heavy rain, and the shamal 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 Dammam?
Main-line and feeder container ships, Pure car and truck carriers, General cargo and project vessels, Handysize bulk carriers — the traffic at Dammam Port runs to containers, general and project cargo, RoRo and vehicles, 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 Dammam?
Cleanship keeps an operating base at Dammam, 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 underwater hull cleaning at Dammam cost?
It depends on the vessel's dimensions and wetted area, the fouling state found, the coating specification and the working window available at Dammam. 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 Dammam and you get a scoped price, usually the same working day.
Underwater Hull Cleaning at Dammam Port.
Tell us the vessel, her ETA at Dammam and the window. You get a scope, a crew size and an honest duration — usually the same working day.