Maritime inspection · Portugal

Thickness Measurement for Ships at Figueira da Foz and the Mondego

Figueira da Foz is a river port at the mouth of the Mondego on Portugal's Atlantic coast. Ships come here for forest products from the surrounding region, for cement and other bulk, and for repair at a local shipyard. The port is small, with a bar and limited depths, so gauging fits berth stays and yard periods. Atlantis NDT mobilises technicians from India to join the vessel.

Forest-products carriers

Ships loading wood pulp, paper and other forest products bring clean, large holds and deck areas. Between cargoes, empty holds allow thorough gauging of tank tops, frames and bulkheads.

Yard docking on the river

A shipyard on the Mondego repairs coasters, fishing vessels and workboats, so shell, sea chest and rudder gauging can be tied to a docking and the attending surveyor's visit.

Bar closures and tidal windows

The Mondego bar can be closed by Atlantic swell, and depths limit which ships come in. We hold flexible dates so weather delays do not waste the technicians' travel.

Inspection services for ships at Figueira da Foz

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

Ultrasonic Thickness Measurement (UTM)

Hull, tank, deck and bulkhead gauging recorded on the class thickness-measurement formats, with sketches and corrosion flagged against the allowable margins.

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Special Survey Thickness Measurement

Gauging for the 5, 10, 15, 20 and 25-year special (renewal) surveys and intermediate surveys, plus pre-docking steel estimates.

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CAS (Condition Assessment Scheme)

Thickness measurement and survey support for the IMO Condition Assessment Scheme, and what CAS asks of an older tanker today.

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CAP Thickness Measurement

Gauging and close-up survey data for a Condition Assessment Programme, the voluntary class service charterers ask for on older tankers and bulk carriers.

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ESP Gauging

Thickness measurement and close-up survey support for oil tankers, chemical tankers and bulk carriers under the ESP Code.

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Hull Structural Integrity

Substantial and excessive corrosion, pitting, grooving, buckling and fatigue cracks, with magnetic particle and penetrant crack detection.

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Ship Piping Inspection

Wall-thickness gauging of cargo, ballast, fuel, sea-water and fire-main piping, with minimum-wall checks and isometric sketches.

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Scrubber Piping Inspection

EGCS wash-water and overboard discharge piping, the hull penetration area and scrubber welds, checked between dockings.

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IHM (Inventory of Hazardous Materials)

IHM Part I surveys, sampling and maintenance for the EU Ship Recycling Regulation and the Hong Kong Convention.

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Marine NDT Services

Every NDT method we use on ships, from visual inspection and MPI to PAUT and ACFM, chosen by the defect you are looking for.

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Figueira da Foz and the Mondego estuary

Figueira da Foz lies on the central Portuguese coast, where the Mondego river meets the Atlantic. The commercial port is on the river's north bank, upstream of a long breakwater and behind a bar that can be dangerous in heavy swell. Dredged channels give access to the quays, but depths are limited, so the port takes small and medium-sized ships. In winter storms the entrance can close for periods, and arrivals shift accordingly. The town itself is a seaside resort, and the commercial port sits beside the beaches and the fishing harbour.

Traffic is dominated by the forest industry. Pulp and paper mills in the region ship products through Figueira, and the port also handles cement, aggregates, fertiliser, cereals and other bulk cargoes. General cargo and break-bulk coasters complete the mix, and the fishing harbour keeps a fleet of trawlers and smaller boats busy. Tugs and pilot boats assist ships through the entrance. Container traffic is small and the port does not receive large cruise ships, so its customers are mainly short-sea and coastal operators.

Planning at Figueira follows the river. Ships plan arrivals around the tide and the swell forecast at the bar, and pilots decide when movement is safe. Once alongside, a loading or discharge stay may last several days, which suits gauging of holds and deck areas when the ship is empty. A docking at the local yard is a longer opportunity, especially for fishing vessels and coasters that need class surveys. Our approach is to set a flexible start date, confirm access with the agent, and keep the scope tight enough to finish if a delay shortens the stay.

Where gauging is done at Figueira da Foz

The port has a shipyard on the Mondego, the Estaleiro Naval do Mondego, which handles repair and conversion of coasters, fishing vessels and workboats. A ship docked or hauled out there can have its shell plating, sea chests, rudder and propeller areas measured, and the yard's staging and access are arranged through the yard planner. Ships too big for the yard go to other Portuguese or Galician yards, and Figueira then provides the afloat gauging ahead of the move.

At the cargo quays, holds on bulk carriers and coasters can be gauged once cargo is discharged, holds are cleaned and the crew declares them safe. Ballast tanks and voids are gauged when emptied and ventilated. Forest-products carriers, which tend to have large clear holds, are straightforward to inspect after a clean discharge. Fishing vessels at the fishing harbour are gauged afloat for owners who want a condition record ahead of a survey or sale. Access to each location is arranged through the ship's agent, and every compartment is entered under the ship's own entry permit.

  • Cargo quays on the Mondego — hold, coaming and tank-top gauging on pulp, paper, cement and bulk ships after discharge.
  • Shipyard on the river — shell, sea chest, rudder and propeller-area gauging during dockings.
  • Fishing harbour — hull and tank gauging on trawlers ahead of surveys or sales.
  • Lay-by berths — condition gauging of idle coasters before charter or sale.
  • Ballast tanks and voids — gauged afloat once emptied, ventilated and released by the crew.
  • Pre-docking calls — afloat readings feeding steel estimates for yards in Figueira, Aveiro or Galicia.

Thickness measurement through the survey cycle at Figueira da Foz

Every renewal survey asks for more thickness measurement than the last, and for oil tankers, chemical tankers and bulk carriers the ESP Code adds close-up survey on top. The table is the usual shape of the work; the class rules and the surveyor set the exact extent, which is why the measurement plan for a job at Figueira da Foz is agreed in writing before mobilisation.

SurveyWhen it fallsWhat the thickness measurement usually covers
Annual surveyEvery year, within three months of the anniversary dateGeneral examination. Gauging where the surveyor finds suspect areas or where substantial corrosion was recorded at an earlier survey.
Intermediate surveyIn place of the second or third annual surveySuspect areas, and on older ships and ESP ships selected ballast and cargo spaces with close-up survey; the extent grows with age.
Renewal survey No. 1Around 5 yearsThe first full baseline: suspect areas and selected plating and stiffeners, usually with modest steel renewal.
Renewal survey No. 2Around 10 yearsWider gauging of deck, bottom and side plating, transverse sections across the cargo area on ESP ships, and more close-up survey.
Renewal survey No. 3Around 15 yearsExtensive gauging of cargo and ballast tank structure and more transverse sections. The survey most likely to turn up steel renewal.
Renewal survey No. 4 and laterAround 20 and 25 yearsGauging extended to most structural members in cargo and ballast spaces. Charterers often add a Condition Assessment Programme.
Docking surveyTwice in each five-year periodBottom and side shell, sea chests, rudder and stern area while the hull is dry; suspect bottom plating gauged.

Port state control and rules at Figueira da Foz

Portugal is part of the Paris MoU, and port state control at Figueira da Foz follows the regional risk-based system. Inspections are carried out under the Directorate-General for Natural Resources, Safety and Maritime Services, known as DGRM, with the local harbour master responsible for port administration. Older coasters and bulk carriers with a history of wastage are inspected more often, so a recent gauging report helps the superintendent see in advance where an inspector is likely to focus.

EU rules play a role too. Shipping is within the EU ETS and FuelEU Maritime applies, though the coastal ships that visit Figueira da Foz may fall below the tonnage thresholds for some obligations. The EU Ship Recycling Regulation requires an Inventory of Hazardous Materials on ships in EU ports, and thickness gauging is often arranged alongside that update. For most customers here the real driver is the class survey cycle, or the decision whether to renew steel or retire an ageing hull. Fishing vessels follow separate flag-state and class rules, and we scope them to match.

Wherever a ship is outside a sulphur emission control area, the global 0.50% sulphur cap applies, and many of the ships calling at Figueira da Foz 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.

Typical thickness gauging jobs at Figueira da Foz

Jobs here are small-ship work shaped by the river. The superintendent or owner provides the last gauging record, the survey due date and the expected berth or yard period, and we agree the spaces to be covered. Typical requests:

  • Hold, coaming and tank-top plating gauging on a paper or pulp carrier after discharge, for an intermediate or renewal survey.
  • Shell plating, sea chest and rudder-area gauging on a coaster at the Mondego shipyard, with readings shared with the class surveyor.
  • Ballast-tank and deck gauging on a bulk coaster at the cement or bulk quay.
  • Condition gauging of a trawler's hull and tanks before a survey or a sale.
  • Re-gauging of renewed plating after yard repair, to confirm that fitted steel matches drawing thickness.

How a thickness measurement job runs at Figueira da Foz

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

Porto's Francisco Sá Carneiro Airport is the main international arrival point, with Lisbon as an alternative; both are reachable by road. Technicians from India connect through a European hub. The ship's agent arranges port and yard access and any launch. Portugal is a Schengen state, so Schengen visas are obtained in India before departure, and the application begins once the arrival or docking date is firm and the owner has provided an invitation letter naming the vessel. Bar closures can move dates, so travel is confirmed against the agent's latest information.

  • 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.

Who does the work, and when class approval applies

The inspection team is mobilised from India for each job; nobody is stationed at the port, so mobilisation is planned against the vessel's schedule and visa lead times. Our founder and Responsible NDT Level III, who holds ASNT NDT Level III in UT, RT, MT, PT and VT and has over eleven years of international field experience, plans and supervises the work. Technicians are certified under the company's written practice to ASNT SNT-TC-1A, and the company holds ISO 9001 and ISO 14001 certification.

Thickness measurement that a classification society credits to a class survey has to be carried out by a firm approved by that society under IACS UR Z17. Atlantis is in the process of obtaining UR Z17 approval from DNV, Lloyd's Register and ABS. Until a certificate is issued, the readings we take are for the owner's own decisions, not for credit to a class survey, so tell us the vessel's class and the survey due when you enquire and we set the scope for the right purpose. Owner's and charterer's condition gauging, pre-docking steel estimates, pre-purchase and on-hire or off-hire gauging, and scrubber and piping condition checks between surveys do not need class approval.

Governing codes and standards

  • IACS UR Z7 hull classification surveys
  • IACS UR Z10.1 to Z10.5 (oil tankers, bulk carriers, chemical tankers, double-hull and double-skin ships)
  • IACS UR Z17 approval of service suppliers
  • SOLAS chapter XI-1 regulation 2 and the 2011 ESP Code
  • MARPOL Annex VI regulation 14 and the 2021 EGCS Guidelines (MEPC.340(77))
  • The rules of the vessel's classification society

What you receive

  • Thickness measurement report on the class formats, with sketches
  • Summary of substantial and excessive corrosion against allowable margins
  • Pitting and grooving records with depth and extent
  • Piping wall-thickness tables with isometric sketches
  • Magnetic particle or penetrant crack-detection reports
  • Gauge calibration records and technician certificates

Industries served

  • Pulp, paper and forest-products carriers
  • Coastal bulk carriers
  • General cargo and multipurpose coasters
  • Fishing vessels and trawlers
  • Tugs and pilot boats
  • Dredgers and workboats
  • Small coastal tankers

Frequently asked questions

Is there a shipyard at Figueira da Foz?

Yes, a shipyard on the Mondego repairs coasters, fishing vessels and workboats, and it is where shell gauging out of the water is realistic. Ships beyond its size dock elsewhere. We check with the owner whether the vessel fits the yard before planning a mobilisation.

What happens if the Mondego bar is closed?

The ship waits offshore or at a nearby port until pilots judge the entrance safe. We hold a flexible start date and confirm with the agent before travel. If the delay is long, the job moves to the new arrival date rather than being squeezed into a shorter stay.

Can holds on a paper or pulp carrier be gauged?

Yes, after discharge, once holds are cleaned and declared safe. We measure tank tops, lower frames, bulkheads and coamings, comparing readings with the ship's thickness records. Clean holds are usually straightforward, though residue on plating is swept away first so that readings are taken on bare steel.

Do you gauge fishing vessels at Figueira da Foz?

Yes. Hull plating, fish-hold structure, tank boundaries and deck areas can be gauged afloat or at the yard. Owners usually request it before a survey or sale, and we report by compartment so the buyer, the class surveyor or the yard can use the same record.

Does thickness measurement at Figueira da Foz need class approval?

Thickness measurement that a classification society credits to a class survey has to be carried out by a firm approved by that society under IACS UR Z17. Atlantis is in the process of obtaining UR Z17 approval from DNV, Lloyd's Register and ABS. Until a certificate is issued, the readings we take are for the owner's own decisions, not for credit to a class survey, so tell us the vessel's class and the survey due when you enquire and we set the scope for the right purpose. Owner's and charterer's condition gauging, pre-docking steel estimates, pre-purchase and on-hire or off-hire gauging, and scrubber and piping condition checks between surveys do not need class approval.

Planning a survey or a drydock?

Send the vessel name or IMO number, the class, the survey due and the port. We reply with the scope, the mobilisation plan and a quote for that vessel.

Request a Quote

Request a ship gauging quote

Send the vessel name or IMO number, the class society, the survey due and the port. We reply with the scope, the mobilisation plan and a quote for that vessel.








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