Maritime inspection · Sweden

UTM and Hull Gauging for Cargo Ships at the Port of Halmstad

Halmstad grew up where the River Nissan reaches the Kattegat, and its port, run together with Varberg by Hallands Hamnar, now handles a broad mix: forest products and paper, steel, recycled metal, containers, bulk cargo and fuels. That variety brings general cargo ships, small bulkers and feeders, each with its own pattern of wear in holds and tanks. No one from Atlantis is stationed in Halmstad; a team travels from India to each ship and works alongside under arrangements made by the agent.

Scrap and steel cargoes

Recycled metal is loaded by grab and magnet, and steel products bear down on tank tops in concentrated loads. Both leave tank tops, hopper plating and lower frames dented, scored and thinned, so hold gauging after discharge is a common request from owners of ships in these trades.

Oceanhamnen's deeper berth

Oceanhamnen, the newest part of the port, has a 200-metre quay with a draught of twelve metres, which lets larger bulk and general cargo ships call. Those ships often stay alongside for a full working day or more, which suits a broader gauging scope.

Paper shippers expect sound holds

Paper and other forest products have to travel dry and clean. Wasted hatch coamings, leaking cover joints and rusting hold steel all risk cargo claims, so owners in the paper trade ask for hatch, coaming and hold readings well before a problem shows up at discharge.

Inspection services for ships at Halmstad

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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The Port of Halmstad: a mixed cargo port at the mouth of the Nissan

Halmstad lies on the southern part of the Halland coast, facing the Kattegat across open water, with Denmark's Jutland coast well beyond the horizon. The older quays grew up near the mouth of the River Nissan, close to the town centre, while newer and deeper berths have been built further out towards the sea, where ships have more room to manoeuvre and lorries and trains have more space to work. The approach from the Kattegat is direct, without the island passages of the Bohuslän or Blekinge coasts, and the harbour is generally free of ice. Ports of Halland, formed in 2012 when the Varberg and Halmstad ports were brought under one company, runs the port today and has been investing in its quays and in charging infrastructure as part of a wider electrification effort.

The cargo base is broad for a port of its size. Forest products and paper move through Halmstad alongside steel, recycled metal, containers, bulk cargo and fuels, often on the same day and at neighbouring berths. The ships that come are correspondingly varied: general cargo and multipurpose ships carrying steel and forest products, small bulk carriers loading scrap and other dry bulk, container feeders connecting with larger hubs, and coastal tankers bringing in fuel. Most are short-sea vessels trading around the North Sea and Baltic, owned and managed from across northern Europe, and many call regularly enough for their superintendents to plan inspection work around a known Halmstad visit. Some carry one cargo in and another out, discharging steel or fuel and then loading forest products or scrap, which can leave a hold empty for a few hours between the two.

Each cargo leaves its mark on the ships that carry it. Scrap is the harshest: heavy pieces are dropped into the hold, grabs and magnets strike tank tops and hopper plates, and the cargo itself can hold moisture and residues that eat into the steel. Steel coils and plates bear on narrow areas of the tank top, and paper reels demand dry, clean holds with tight hatches. So the gauging requested here is mostly about holds, tank tops, hopper and topside tanks and hatch coamings, with ballast tanks and deck plating added when a survey is due. The port's mix also means it is a convenient place for owners to check ships that have changed trades, for example from scrap to forest products, and want the condition of the holds documented before the first cargo of the new trade.

Where ships are gauged in Halmstad

Halmstad is a cargo port rather than a repair centre, so gauging is done with the ship afloat at her loading or discharge berth, or at a lay-by quay if she is waiting for cargo. Holds are reached most easily once discharge is complete and the hold has been swept, or before loading starts if the ship arrives empty. Hatch covers and coamings are measured while the covers are open and the hatch is not being worked. Ballast tanks need to be emptied, ventilated and certified safe for entry by the crew, so they are scheduled when the ship's ballast plan allows it, usually agreed with the chief officer before arrival.

For docking, owners send their ships to yards in Denmark, Poland, Germany, the Baltic states or wherever their usual arrangement lies. A Halmstad call before the docking gives the chance to measure holds that are about to be repaired and to send the yard a steel list based on current readings. Varberg is a short distance up the coast and is operated by the same port company, so a team in Halmstad can also attend a ship there on the same trip.

  • Oceanhamnen deep-water quay — broader hold, tank-top and ballast tank gauging on larger bulk and general cargo ships during longer calls.
  • Quays near the Nissan mouth — hatch coaming, hold and deck readings on general cargo ships loading or discharging forest products and steel.
  • Bulk and scrap berths — tank-top, hopper and lower-frame gauging after discharge, with damage mapping where grabs and magnets have struck.
  • Container berth — ballast tank, deck and scrubber line measurements on feeder ships within the berth window.
  • Fuel and liquid berths — deck and ballast tank work on coastal tankers, subject to terminal rules and the ship's permit.
  • Lay-by quays — owner's condition and pre-purchase gauging on ships waiting for cargo or between charters.

Thickness measurement through the survey cycle at Halmstad

Class rules set the survey cycle, and the cycle sets how much gauging a ship needs. A superintendent planning a call at Halmstad usually knows which survey is due; the table shows what the thickness measurement for each one typically involves. The exact extent comes from the class rules for the ship type and the surveyor attending, so the thickness measurement programme is agreed with the class before work starts.

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.

Inspection, regulation and cargo-driven wear in Halmstad

The Swedish Transport Agency carries out port state control in Halmstad under the Paris MoU. General cargo ships and older small bulkers form a large part of the traffic, and structural deficiencies on such ships typically centre on hatch covers, coamings, corroded deck fittings and hold structure, which are exactly the areas gauging addresses. Bulk carriers come under the Enhanced Survey Programme, and single-side-skin bulk carriers have specific IACS renewal criteria for hold frames, so a bulker in the scrap trade can reach the point where frames need renewal sooner than her age would suggest.

Two further EU requirements affect the ships here. Ships of 500 gross tonnage and above calling at Halmstad must carry an Inventory of Hazardous Materials under the EU Ship Recycling Regulation, and larger ships of 5,000 gross tonnage and above report their emissions under the EU ETS and FuelEU Maritime. Commercially, paper and steel shippers and their insurers look closely at cargo-handling condition: a hold with heavy scale, damaged coating or leaking hatch joints can lead to rejected cargo or claims. That makes documented hold and hatch condition valuable to owners trading here, alongside the readings their class survey requires.

Ships trading to Halmstad 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.

Thickness measurement jobs typical of Halmstad

The jobs in Halmstad follow the cargo. Scrap and steel ships need their holds checked after hard use; paper and forest-product ships need sound hatches and dry holds; feeders and tankers need ballast tank and deck readings fitted into short calls. We agree each scope with the superintendent before the team travels, confirm with the agent which berth the ship will use and how long she is expected to stay, and arrange the order of work so that measurements in a hold are complete before cargo operations reach it. Reports go to the superintendent the same day, so repair decisions can be taken before the ship sails. Examples include:

  • Tank-top, hopper and lower hold-frame gauging on a bulk carrier after discharging scrap, with grab damage marked for the owner's repair list.
  • Hatch coaming and cover plate readings on a general cargo ship about to enter the paper trade, documenting condition before the first cargo.
  • Ballast tank and deck gauging at Oceanhamnen on a larger bulk carrier approaching an intermediate survey.
  • Pre-purchase hold and tank gauging on a small multipurpose ship lying at a lay-by quay, for a buyer in another country.
  • Scrubber wash-water line measurements on a container feeder during its regular Halmstad call.

How a thickness measurement job runs at Halmstad

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

Halmstad Airport has domestic flights, but the team normally arrives through Copenhagen Airport or Göteborg Landvetter and continues to Halmstad by train on the West Coast Line or by road. The cargo quays are ISPS-controlled, so the ship's agent arranges gate passes for the named technicians and confirms the berth and working hours with the terminal. The team travels from India on Schengen visas, and for ships with regular Halmstad calls a visa obtained once can cover several jobs within its validity.

  • 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

  • Small bulk carriers
  • General cargo ships
  • Multipurpose ships
  • Container feeder ships
  • Coastal tankers
  • Coasters in the steel and scrap trades
  • Harbour tugs

Frequently asked questions

Can a ship's holds be gauged straight after discharging scrap in Halmstad?

Yes, once the hold has been swept and residues removed, because readings need clean steel at each measuring point. Tank tops, hopper plating and lower frames are the focus, and grab or magnet damage is recorded alongside the thickness readings. If the ship is loading another cargo straight away, we agree with the chief officer which holds are released to us first.

What should owners in the paper trade have measured?

Hatch cover top plates and side plating, coaming plates and top bars, and the hold structure where rust scale and coating damage could spoil cargo. Readings show whether wastage has reached the point where the steel should be renewed rather than patched. Combining this with the class survey schedule means repairs can be planned for the next docking rather than done in a hurry.

Is there a drydock at Halmstad?

Halmstad is a cargo port and not a ship-repair centre, so owners dock their ships elsewhere, usually in Denmark, Poland, Germany or the Baltic states. A Halmstad call before the docking is a useful chance to measure holds and tanks and pass the yard a steel list based on current readings, and our team can travel to the yard for the rest of the programme.

Can one trip cover ships in both Halmstad and Varberg?

Usually, yes. The two ports are a short distance apart on the same coast and are operated by the same company, so if ships are in both at around the same time, the team can attend them one after the other. We ask for both ships' expected dates early so the visa period and travel plan cover the whole trip.

Does thickness measurement at Halmstad 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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