Hull Gauging in Dubai for Ships at Drydocks World and Jebel Ali

Inspection services for ships at Dubai

Each service has its own page with the method, the class requirements and what the report contains.

Drydocks, berths and anchorages: where Dubai gauging takes place

Most full-scope gauging in Dubai takes place at Drydocks World, where ships are dry-docked or lie at repair berths with staging, lighting and gas-free certificates arranged by the yard. Work in dock has to fit the yard's sequence, because blasting, staging and steel renewal all compete for the same tanks. The TM plan is therefore agreed with the yard's project manager and the owner's superintendent before the ship arrives, and readings are taken in the order the tanks are released. Results showing substantial or excessive corrosion go to the superintendent the same day, so renewal can be ordered while the staging is still rigged and the class surveyor is still attending.

Outside the yard, gauging is done wherever the ship has a safe, gas-free window: at Jebel Ali berths during a longer call, at Mina Rashid on cruise turnaround days, or at anchorage. Smaller repair facilities in Dubai Maritime City handle tugs, supply boats and harbour craft, which need gauging at their own renewal surveys. For owners with ships at several UAE ports, Dubai is also a practical point from which to plan a sequence of jobs along the coast.

• Drydocks World, Port Rashid — renewal-survey gauging, pre-docking steel estimates and confirmation readings on tankers, gas carriers, bulk carriers and offshore units in the large docks
• Jebel Ali Port — limited-scope gauging and piping inspection on container ships, ro-ro and break-bulk vessels during longer port stays, with ISPS access through the agent
• Dubai anchorages — launch-boat gauging for pre-purchase, on-hire and CAP sampling on tankers and bulkers held at anchor for a berth, fresh orders or a docking slot
• Mina Rashid cruise terminal — piping and scrubber wash-water line checks on cruise ships during turnarounds in the winter cruise season
• Dubai Maritime City — renewal gauging on tugs, workboats and offshore support vessels at the smaller repair facilities next to the main yard

PSC, fuel sulphur and Dubai's ship-management community

Ships calling at Jebel Ali are inspected by UAE port state control officers working within the Riyadh MoU, the regional regime the GCC states share. Structural findings such as wasted deck plating, holed air pipes, corroded ventilator coamings and wasted hatch coamings feature in detentions everywhere, and an owner who knows the ship's thickness margins is far better placed to answer them. The Gulf is not a sulphur emission control area; the applicable limit is the global 0.50% cap under MARPOL Annex VI regulation 14. Ships fitted with exhaust gas cleaning systems still trade here on high-sulphur fuel, and their wash-water and overboard piping corrodes quickly in warm seawater.

Dubai's importance for inspection is commercial as much as physical. A large community of ship managers, owners' representatives, charterers, P&I correspondents and marine surveyors works from the city, and decisions about which ship goes to which yard, or whether a 15-year-old tanker gets a CAP rating or goes for sale, are often taken here. The environment adds its own engineering case for gauging: summer air and sea temperatures, the Gulf's high salinity and dew-soaked nights all shorten coating life in ballast tanks and drive condensation corrosion in void spaces, cargo holds and under-deck structure.

Wherever a ship is outside a sulphur emission control area, the global 0.50% sulphur cap applies, and many of the ships calling at Dubai meet it with an exhaust gas cleaning system rather than compliant fuel. Scrubber wash-water piping, the overboard discharge and the hull penetration around it corrode quickly in service, especially on open-loop systems, and are worth adding to the gauging scope.

How a thickness measurement job runs at Dubai

The sequence for a thickness measurement job at Dubai is short and written down, so the yard, the surveyor and the superintendent know who arranges what.

Teams fly into Dubai International (DXB), which has frequent direct flights from India; Al Maktoum International at Dubai World Central, near Jebel Ali, is an alternative. Yard access at Drydocks World is arranged with the yard through the owner's site team, and port entry at Jebel Ali or Mina Rashid needs an ISPS gate pass requested by the ship's agent. Anchorage work is done by launch, also booked through the agent. UAE entry visas for the team are processed before departure, so we confirm the job early and follow the ship's ETA and docking date closely.

• Send the vessel name or IMO number, ship type, class society, the survey due (annual, intermediate, renewal survey number, CAP or owner's condition survey), the port and dates, and the scope you expect.
• We confirm the scope against the class rules for that survey, prepare the thickness measurement plan with frame and section references, and say whether the measurement will be credited to a class survey.
• Mobilisation is planned around visa lead times and the vessel's schedule; the ship's agent arranges port access, and the yard or ship arranges staging, lighting, ventilation and gas-free certificates.
• Gauging with calibrated ultrasonic thickness gauges: through sound coatings only where the gauge's through-coating mode has been verified on a coated reference, otherwise on cleaned bare steel, with every reading tied to its frame, strake and location on the sketch.
• Readings are compared with original thicknesses as work proceeds; substantial and excessive corrosion and any cracks are reported to the attending surveyor and the superintendent the same day.
• The final report is issued on the class thickness-measurement formats with sketches, a summary of locations exceeding the allowable margins, piping tables where piping was in scope, and the gauge calibration and technician certificates.

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