Ultrasonic Thickness Measurement for Tankers and Ships in Antwerp

Inspection services for ships at Antwerp

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

Where gauging happens inside the port of Antwerp

Antwerp ship repair for deep-sea tonnage centres on EDR Antwerp Shipyard, whose floating docks inside the port take tankers, bulk carriers, cargo ships and offshore units. Because the yard sits within the same dock system as the cargo terminals, a superintendent can have the ship gauged at its last discharge berth, send the readings to the yard, and arrive with the steel programme already defined. Repair contractors working alongside at repair quays handle afloat jobs, and gauging can define the scope of those repairs too.

Afloat, the chemical jetties are the most common workplace and the most regulated. Each terminal applies its own permit-to-work and gas-detection rules, and cargo tank entry needs cleaning, ventilation and a gas-free certificate. Deck manifolds, cargo and ballast lines and pump-room piping can usually be measured during or between operations with the right permits. Container terminals on the river allow little more than deck, lashing-bridge and scrubber piping checks within a working call, while breakbulk and ro-ro berths inside the docks offer more time. For ships awaiting a berth, the lay-by quays in the dock system are often the best compromise between access and time.

• EDR Antwerp Shipyard — pre-docking and in-dock gauging on tankers, bulk carriers and cargo ships using its floating docks inside the port.
• Chemical jetties on the right and left banks — cargo piping, manifold and pump-room wall-thickness checks on parcel tankers under terminal permits.
• Liquefied gas berths — deck piping, hold-space and tank-surround gauging on LPG and ethylene carriers between cargo operations.
• Deurganck dock and river container terminals — exhaust-gas scrubber discharge lines, lashing bridges and hatch coamings measured while the ship works its call.
• Breakbulk, steel and ro-ro berths inside the locks — hold, tank-top, ramp and car-deck gauging on multipurpose and ro-ro ships during staged loading.
• Lay-by quays in the dock system — ballast tank and cargo-tank gauging on ships waiting between parcels or for a yard slot, once gas-free.

Port state control, emissions rules and the Antwerp tanker market

Belgium applies Paris MoU port state control, and Antwerp, its approaches and the whole Scheldt passage are inside the North Sea SOx ECA, where marine fuel may carry no more than 0.10% sulphur. Scrubber-fitted ships therefore either burn compliant fuel on the river or operate their exhaust gas cleaning systems under whatever local wash-water rules apply in Belgian and Dutch waters, which the agent should confirm for each call. Antwerp is also a major bunkering port, so many ships change fuel here, and those stops are useful moments to inspect wash-water and overboard lines.

The local owner and operator community gives the market a technical edge. Antwerp has long been home to tanker and gas carrier owners and managers, and chemical tanker charterers apply detailed vetting that looks hard at structural condition and cargo system integrity. With shipping brought into EU ETS in 2024 and FuelEU Maritime applying from 2025, the owner of an older parcel tanker or product tanker weighs those obligations against the steel renewal due at its next ESP survey before deciding whether to keep it trading. Measured thickness data, gathered on a call before the decision, makes that comparison concrete.

Ships trading to Antwerp are inside a sulphur emission control area, where fuel must not exceed 0.10% sulphur unless an exhaust gas cleaning system (scrubber) is fitted. Scrubber wash-water piping, the overboard discharge and the hull penetration around it are among the fastest-corroding parts of a modern ship, so they belong in the gauging scope at every docking and, on open-loop systems, between dockings.

How a thickness measurement job runs at Antwerp

Most of the work on a Antwerp job happens before the team boards: scope, plan and access are settled first, so the time on board goes on measurement.

Brussels Airport is the main international gateway, with road and rail connections to Antwerp; the city's own small airport handles only limited regional flights. Terminals and the yard sit inside ISPS-controlled port areas on both banks, and the ship's agent registers the team for gate access and, where needed, for a terminal safety induction. A technician travelling from India needs a Schengen visa before entering Belgium, so give us the expected arrival window and berth plan as early as possible and we will schedule mobilisation around the cargo sequence.

• 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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