In-Water Class Survey at Dammam Port
Class attendance without opening a dry dock
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Tell us the vessel, the port and the window. Scoped reply, usually the same working day.
Cleanship Marine delivers class-approved in-water surveys at Dammam Port, Eastern Province, with high-definition live video to a surface monitoring station, diver-to-surveyor communications and a full report package for the class file.
Classification societies accept in-water survey in place of drydocking for many vessels and inspection scopes, provided the work is done by an approved diving contractor to a defined procedure with the surveyor able to see the structure in real time. Shelter is on your side here — the vessel is stable and the dive is uninterrupted — but basin silt means the lighting and camera plan has to be agreed with the surveyor before the class attendance is booked, not improvised on the day.
What it gets you
- Survey requirement satisfied without opening a dry dock or taking the vessel off hire
- Surveyor sees the structure live rather than reviewing a recording after the fact
- Defects located precisely against hull reference marks, not described approximately
- A report package built for the class file, not a video dump
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
- Survey programme agreed in advance with the class society and the surveyor attending at Dammam
- Hull plating, welds, sea chests, rudder, propeller and stern gear inspected to the agreed scope
- Live high-definition video to the surface station with two-way diver-to-surveyor communications
- Hull markings and reference points confirmed so the surveyor can locate every feature precisely
- Diving permission and any environmental clearance cleared with Mawani, the Saudi Ports Authority
- Full report package with video, stills and findings issued for the class file
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 in-water class survey attendance, wherever the vessel is. Anything outside it is quoted separately and flagged before mobilisation, never added afterwards.
- Hull structure inspection
- Shell plating, welds, bilge keels and openings inspected with continuous video and commentary, with cleaning of areas as needed for meaningful viewing.
- Rudder and steering gear
- Rudder plating, pintles, bearings and clearances inspected and, where required, measured.
- Propeller and stern arrangement
- Propeller, boss, rope guard and stern tube seal inspected for damage, erosion and leakage.
- Sea chests and openings
- Sea chests, gratings, valves and overboard discharges inspected and recorded.
- Anodes and coating
- Sacrificial anode wastage assessed and coating condition mapped for planning the next dry docking.
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 in-water class survey 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 — In-Water Survey at Dammam
Do you provide in-water class survey 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 in-water class survey 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 in-water class survey 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 in-water class survey 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.
In-Water Class Survey 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.