Maritime inspection · Germany

Ultrasonic Thickness Measurement for Forest Product, Agribulk and Project Ships at the Port of Brake

Brake, on the left bank of the Lower Weser between Bremen and Bremerhaven, is a port of specialised bulk and breakbulk trades: it is Germany's largest import port for pulp, a busy agribulk port for grain and animal feed, and a transshipment point for steel, project cargo and wind turbine components. Those cargoes keep ships alongside long enough to gauge holds, tween decks and tanks properly. Atlantis keeps nobody at Brake; each job is done by technicians who travel from India to the ship.

Pulp and forest product carriers

Pulp and other forest products arrive at Brake on open-hatch and conventional dry cargo ships. Their box-shaped holds and large hatch covers carry heavy unit loads, and the gantry cranes on some open-hatch designs need their rail foundations checked as well as the plating.

Agribulk ships beside the silos

Grain, feed and other agricultural bulk are discharged into the port's silos and warehouses. Ships carrying food and feed cargoes must keep holds clean and dry, so leaking hatch covers, corroded hold frames and wasted bilge wells are worth finding before the next loading.

Steel, heavy lifts and wind components

Steel products, project cargo and onshore wind turbine parts cross Brake's quays on multipurpose and heavy-lift ships. Tank tops and tween decks under heavy units, crane pedestals and lashing points are the usual gauging and crack-detection targets on these vessels.

Inspection services for ships at Brake

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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Brake on the Lower Weser and the ships it handles

Brake lies on the west bank of the Weser in Lower Saxony, downstream of Bremen and upstream of Nordenham and Bremerhaven, and ships reach it by the same pilotage passage up the Lower Weser that serves the Bremen docks. The port is owned by Niedersachsen Ports, and its terminals are run by J. Müller, a long-established Weser port operator. The berths stretch along the riverbank with silos, warehouses, covered sheds and open storage behind them, and the river here is tidal, so berthing of the deeper ships is planned around high water. Road and rail connections reach far into the German hinterland, which is a large part of why importers of pulp, feed and steel use Brake rather than a bigger port. Expansion at the neighbouring Boitwarder Groden area has been planned, with offshore wind handling among the uses discussed.

Brake's traffic is defined by its cargoes rather than by ship size. Pulp is the headline trade, and the port is the largest pulp import port in Germany, supplying paper and board mills inland. Grain, animal feed and marine proteins arrive for the agricultural and feed industry of north-west Germany, while iron and steel products, heavy lifts and project shipments use the breakbulk quays. Onshore wind turbine components such as tower sections, nacelles and blades are another regular cargo, and they grow larger with each generation of turbine. The ships that bring all this are mainly handysize bulk carriers, open-hatch and conventional forest product carriers, multipurpose and heavy-lift vessels, general cargo ships and coasters, many of them managed from Germany, Scandinavia or the Netherlands.

That mix explains why gauging requests at Brake tend to involve holds and hatches rather than tank farms or cargo systems. Unit cargoes such as pulp bales and steel coils impose concentrated loads on tank tops and tween decks; food and feed cargoes demand weathertight hatch covers and sound, clean hold steel; and project ships carry the stresses of their own heavy-lift cranes. Discharge is methodical, crane by crane and hold by hold, so a ship commonly lies at Brake across several tides. North-westerly gales in autumn and winter can delay the passage up from the river mouth, and a severe cold spell occasionally puts ice on the Weser, yet a ship moored at the terminal is rarely stopped from working by either.

Gauging at Brake's quays, and where ships dock

All gauging at Brake is done afloat at the operator's berths and fitted around discharge or loading. On a forest product carrier, holds are released as the stevedores clear each one, and the hatch covers can be measured while they are open on the coamings or stowed. On agribulk ships, the time between the end of discharge and the start of hold washing or ballasting is the usual window for frames, plating and bilge wells. Multipurpose ships at the breakbulk quays give access to tween decks and pontoons as cargo is landed, and the structure under their cranes can be examined in the same visit.

Brake has no merchant dry dock of its own. A ship that needs docking after a Brake call usually goes downriver to the floating docks at Bremerhaven or to a yard elsewhere in north-west Europe, and the thickness data recorded at Brake goes with her as the starting steel list. Ships lying at the port waiting for cargo, a berth or a new charter offer longer windows, and that is when full condition and pre-purchase surveys are most practical.

  • Forest product berths — hold, tank-top and hatch cover gauging on pulp carriers as each hold is discharged.
  • Agribulk berths beside the silos — hold frames, hopper plating and bilge wells measured after grain or feed discharge.
  • Breakbulk and heavy-lift quays — tween-deck, pontoon and crane pedestal checks on multipurpose ships, with magnetic particle testing at critical welds.
  • Wind component handling areas — deck and tank-top readings on ships delivering towers, nacelles and blades.
  • Waiting berths at the port — owner's condition and pre-purchase gauging on ships idle between cargoes.
  • Bremerhaven floating docks downriver — the nearest docking option, with Brake readings supplied as the steel estimate.

Thickness measurement through the survey cycle at Brake

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 Brake 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, cargo standards and EU rules at Brake

Ships at Brake come under Paris MoU port state control, carried out in Germany by BG Verkehr's Ship Safety Division. The handysize and forest product fleet that serves the port includes many ships in their second and third decades, which the Paris MoU targeting system weighs heavily, and hatch cover weathertightness, wasted air pipes and corroded deck fittings feature often in inspection reports on older dry cargo ships. Food and feed shippers add a commercial layer: a hold that lets in water or sheds rust scale can lead to cargo claims or rejection, so hold condition is a trading matter as much as a class one.

Several European rules reach the Brake fleet. The EU Ship Recycling Regulation requires an Inventory of Hazardous Materials on ships calling at EU ports, and owners preparing an IHM for an older bulk carrier often combine that onboard visit with condition gauging. EU ETS has covered emissions on voyages to and from EU ports since 2024, and FuelEU Maritime has set greenhouse-gas intensity targets since 2025, so for an ageing pulp or bulk carrier the next renewal survey is now a commercial decision as well as a technical one. Steel condition measured during a Brake call helps answer it.

Ships trading to Brake 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.

Typical thickness measurement jobs in Brake

Most Brake jobs are hold-centred and run in step with the stevedores. A superintendent will often ask for a full set of hold readings on a forest product carrier or bulk carrier before an intermediate survey, or for hatch cover and coaming work after a cargo receiver complains of water damage. Heavy-lift ships add crane foundations and the deck around them. Because ships tend to stay at Brake longer than at a container terminal, the scope can be broader than at most ports of this size, and results are reported as the work goes on, so the owner can line up repairs before the ship sails. Some typical jobs:

  • An open-hatch forest product carrier discharging pulp: tank-top plating under the bale stows, hold side structure and gantry crane rail foundations.
  • A bulk carrier after feed discharge: hold frames, lower brackets, hopper sloping plates and bilge wells, measured before the holds are washed.
  • A multipurpose ship landing wind turbine towers: tween-deck pontoons, hatch covers and main deck plating under the stowage areas.
  • A general cargo ship facing a wet-cargo claim: hatch cover plating, side plates, cleats and compression bars, with readings on the coamings.
  • A heavy-lift ship before a project loading: crane pedestal and deck structure gauging plus magnetic particle testing at the pedestal welds.

How a thickness measurement job runs at Brake

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

Bremen Airport is the nearest airport with international connections, and the team continues north to Brake by road or regional train along the west bank of the Weser; Hamburg Airport is the long-haul alternative. Access to the J. Müller terminals is ISPS-controlled and arranged by the ship's agent, who also confirms which berth the ship will take. Our technicians travel from India on Schengen visas, so it helps to send the expected call early and let us fix travel once the river passage is confirmed.

  • 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

We send the team from India to the ship for each job rather than keeping staff at the port, and plan the mobilisation around visas and the vessel's itinerary. The work is planned and supervised by the founder, our Responsible NDT Level III (ASNT NDT Level III in UT, RT, MT, PT and VT, with more than eleven years of international field experience). Technicians hold certification under the company's written practice to ASNT SNT-TC-1A; Atlantis is ISO 9001 and ISO 14001 certified.

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

  • Forest product and open-hatch carriers
  • Handysize bulk carriers
  • Agribulk carriers
  • Multipurpose and heavy-lift ships
  • General cargo ships
  • Coasters
  • Steel and project cargo carriers

Frequently asked questions

Can a pulp carrier be gauged during discharge at Brake?

Yes, hold by hold. Once the stevedores have cleared a hold, the team can measure the tank top, hold sides and frames while discharge continues elsewhere, and hatch covers can be done while they are open. We agree the order with the chief officer at the start, so that the holds the class or the owner cares about most are reached first and none is left unmeasured when loading of a return cargo begins.

Is there a dry dock at Brake?

No merchant ship dry dock operates in Brake itself. Ships calling here usually dock at Bremerhaven, a short way downriver, or at a yard elsewhere in north-west Europe chosen by the owner. A Brake call is still valuable, because measuring holds, tanks and hatch covers alongside gives the docking yard a steel figure before the ship arrives, which shortens the time in dock.

What should be checked on a ship that carries food and feed cargoes?

Hatch covers and coamings come first, because a leak spoils cargo. Then hold plating and frames, where flaking rust and pitting can contaminate the next cargo, and bilge wells with their suction lines. Ballast tanks behind the hold sides matter too, since a corroded tank boundary can let water into a hold. Gauging these areas after discharge gives a clear work list for the crew and for the next yard.

Can the structure under heavy-lift cranes be inspected in the same visit?

The cranes themselves are examined and certified under their own lifting-appliance regime, but the structure supporting them is hull steel and can be included in our scope: pedestals, the deck plating and stiffening around them, and the welds joining the two. Gauging plus magnetic particle testing at those welds is a common request before a heavy project lift or a crane load test.

Does thickness measurement at Brake 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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