Maritime inspection · Poland

Hull and Tank Thickness Gauging at the Port of Świnoujście

Świnoujście is where the Oder fairway meets the open Baltic. Ferries cross from here to Sweden, bulk carriers discharge at the deep-water quays, and LNG carriers call at the gas terminal. Ships spend short, fixed periods alongside, so gauging has to be planned to the hour. Atlantis sends technicians from India to the vessel for each job, with no one stationed in Poland, and works to the ship's berth schedule or her slot in a yard.

The sea gate of the Oder

Ships reach Świnoujście straight from the open Baltic, before the long river passage to Szczecin. A superintendent can have readings taken on arrival and decide on steel before the ship commits to a yard slot upriver.

Crossing ferries on a fixed rhythm

Sweden-route ferries return to the same berth on the same pattern. Because the schedule repeats, a staged scope on car decks, ramps and engine-room piping can be agreed once and repeated across several turnarounds.

Gas terminal discipline

Work on LNG carriers is confined to the deck, ballast tanks and sea-water systems, inside the terminal's permit regime. The cargo containment system stays outside our scope, and the plan is settled with the ship's master beforehand.

Inspection services for ships at Świnoujście

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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Świnoujście: a strait between two islands

The town is built across the Świna, the narrow strait that links the Szczecin Lagoon with the Pomeranian Bay, and it is spread over several islands. Usedom lies on one side and Wolin on the other, and local road traffic crosses the water by public ferry because there is no fixed bridge in the town. Breakwaters shelter the entrance from the sea, so a ship coming in from the bay passes between the moles and finds the port's quays almost at once. Nobody arriving needs a long approach channel to get alongside.

That position makes Świnoujście a sea port in the proper sense, in contrast with the river port of Szczecin upstream. Ships bound for Szczecin pass through on the way, take a pilot here and continue along the dredged fairway, while larger vessels often discharge part of their cargo at Świnoujście to reduce draught. Ferries and ro-ro freight dominate the ship movements, gas carriers add a specialised stream, and bulk carriers handle coal, ore and agricultural cargoes at the deep-water berths. A naval base shares the harbour, and the parts of the water it uses are closed to commercial work.

The Baltic here has almost no tide, but the water level swings with the wind, and a long run of westerly or easterly weather can raise or lower the quays noticeably. That affects mooring and gangway arrangements more than it affects gauging. Winters are cold rather than icebound; drifting ice can slow the lagoon and the fairway for short spells in hard winters, while the sea end of the port generally stays open. Autumn and winter gales are the main interruption to anything that depends on a launch or an open deck.

Where ships are gauged at Świnoujście

Świnoujście has no large commercial drydock of its own. A ship that needs a dock goes upriver to Szczecin or along the coast to Gdańsk, and gauging done here is the way to know what to expect before that voyage. A superintendent who has measured the shell, tank tops and deck beforehand can send the yard a steel list in advance and avoid the surprise of discovering extensive wastage after the dock has been flooded.

Ferry and ro-ro berths offer the best access for plating inside the vessel. Bulk and general cargo quays suit hold and hatch work while cargo is moving, and the gas terminal handles tanker deck and ballast scopes under tight controls. Anchorage work in the bay is possible only when the sea and the agent's launch allow it, and the scope is ordered so the most valuable readings come first. Every berth sits behind port security, so names and passes go to the terminal through the agent in good time.

  • Ferry terminal berths — vehicle decks, ramps, bow and stern doors and engine-room piping on ro-pax ships during their fixed turnarounds.
  • Ro-ro and general cargo quays — tween decks, trailer lanes, hatch covers and lower holds while cargo is worked.
  • Bulk berths — hold frames, hopper plating and coamings on bulk carriers after discharge and before the next loading.
  • LNG terminal — deck, ballast tank and sea-water piping on gas carriers only, never the cargo containment system.
  • Pomeranian Bay anchorage — short, launch-borne scopes on ships waiting for a berth or the river pilot.
  • Yards at Szczecin and Gdańsk — the usual dockings, where readings taken here support the steel estimate.

Thickness measurement through the survey cycle at Świnoujście

How much steel has to be gauged depends on which survey the ship is due for, its type and its age. The pattern below is the usual one under IACS unified requirements; the attending surveyor and the class rules for the ship decide the final extent. For a ship calling at Świnoujście, we agree the programme with the class and the owner before the team mobilises.

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, the Maritime Office and gas-terminal rules

Port state control in Poland follows the Paris MoU and is carried out by inspectors of the maritime administration. Świnoujście falls under the Szczecin Maritime Office (Urząd Morski w Szczecinie), which also supervises the fairway through the lagoon. Ro-pax ferries on regular Baltic routes are in addition covered by the EU directive on survey and inspection requirements for ro-ro passenger ships, so their operators keep an eye on the condition of fire mains, bilge lines, sea-water cooling and the structure around the doors. Recent readings on those systems answer questions before an inspector asks them.

Tankers and gas carriers are treated as higher-risk ship types in the targeting regime, and the gas terminal runs its own entry rules on top of the ship's safety management system. Ships coming from outside the EU must carry an Inventory of Hazardous Materials under the EU Ship Recycling Regulation, and voyages between European ports now fall under the EU emissions trading scheme and FuelEU Maritime. For ferry operators with daily crossings these obligations make accurate steel and piping condition data a part of fleet planning, not just a survey formality.

Ships trading to Świnoujście 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 gauging jobs at Świnoujście

Most work here is shaped by the port's job as a gateway: ferries on fixed rotations, ships passing to and from Szczecin, and gas carriers. We agree the scope with the superintendent and the ship's agent, check the berth schedule, and arrange gas-freeing and entry permits through the ship. When a ship will later dock upriver, the readings are laid out so the yard can use them directly in its steel planning.

  • Car-deck and ramp plating gauged on a Sweden-route ro-pax, with magnetic particle testing of ramp hinge and door-surround welds, staged across successive turnarounds.
  • Ballast-tank and main-deck gauging on an LNG carrier alongside, kept clear of the containment system and carried out inside the terminal's permit rules.
  • Hold frames, hopper plating and hatch coamings on a bulk carrier after discharge, ahead of an ESP intermediate survey.
  • Pre-docking steel estimate for a river-sea coaster before she goes upriver to a Szczecin yard.
  • Owner's condition gauging for a prospective buyer on a ro-ro ship at lay-by.

How a thickness measurement job runs at Świnoujście

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

Teams normally fly to Berlin or Szczecin-Goleniów and continue by road, with Copenhagen and Hamburg as other routes; the road journey from Berlin is of the order of a few hours but depends on traffic and the border formalities of the day. Poland is in the Schengen area, so teams from India travel on Schengen visas, which should be applied for early. Port and terminal access is requested through the ship's agent, who also books launches for the anchorage.

  • 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

  • Ro-pax ferries on Baltic crossings
  • Ro-ro and trailer ships
  • LNG carriers
  • Bulk carriers and handysize ships
  • General cargo ships and coasters
  • River-sea vessels bound for Szczecin
  • Product and chemical tankers

Frequently asked questions

Can a ship be gauged at the Pomeranian Bay anchorage off Świnoujście?

Yes, in suitable weather and with a launch arranged by the agent, but the scope should be narrow. Deck plating, hatch coamings, air pipes and one or two prepared tanks are realistic. The Baltic can turn rough with little warning, so the most important readings are taken first and the programme is cut short if boarding becomes unsafe.

Is there a drydock at Świnoujście for a renewal survey?

Not a large commercial one that we would rely on for renewal work. Ships that need a dock usually go upriver to Szczecin or on to Gdańsk. Gauging at Świnoujście is useful beforehand, because it tells the yard which areas of the shell, tanks and deck to expect steel renewal in, before the ship is committed to a docking date.

What can be measured on an LNG carrier at Świnoujście?

Deck plating, ballast tanks, and sea-water and fire-main piping, within the terminal's rules and the ship's own permit system. The cargo tanks and containment system are not part of our scope. Operators who need the ship's own safety procedures followed on gas-dangerous areas should state that in the instruction, and we confirm the plan with the master first.

Does winter weather stop gauging at Świnoujście?

Cold spells and drifting ice rarely close the sea end of the port, but gales can stop launches and make open decks unpleasant. Alongside, work inside tanks, voids and engine rooms continues in most weather. In January and February we plan more indoor scope on deck-covered spaces, and keep a weather day in the schedule where the ship's stay allows it.

Does thickness measurement at Świnoujście 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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