Maritime inspection · Romania
Tulcea Hull Thickness Measurement and Ship Gauging
Tulcea is the gateway to the Danube Delta, the town where the river splits towards the sea. Cargo ships call for bulk and industrial cargoes, passenger vessels run into the delta from its quays, and a shipyard builds specialised vessels on the riverbank. For an owner or superintendent, a team travelling from India can gauge a ship here, alongside or at the yard, and leave with figures ready for a class surveyor.
Head of the delta, mouth of the river
Tulcea sits where the Danube divides into its delta arms, with the Sulina channel the route to the sea. Ships working this stretch spend long periods in sheltered fresh and brackish water, which leaves its own pattern of hull and tank wastage.
A newbuilding yard beside the quays
Vard operates a shipyard at Tulcea that builds sophisticated vessels for export. Hulls and blocks from the yard may need condition measurement at handover, and nearby vessels in repair or conversion can use the same attendance.
Delta passenger and workboat fleets
Passenger vessels, delta cruise craft, pilot and survey boats and inspection launches use Tulcea as home. Small steel hulls in freshwater service reward regular gauging, especially around the waterline, bilges and tank boundaries.
Inspection services for ships at Tulcea
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.
ExploreSpecial Survey Thickness Measurement
Gauging for the 5, 10, 15, 20 and 25-year special (renewal) surveys and intermediate surveys, plus pre-docking steel estimates.
ExploreCAS (Condition Assessment Scheme)
Thickness measurement and survey support for the IMO Condition Assessment Scheme, and what CAS asks of an older tanker today.
ExploreCAP 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.
ExploreESP Gauging
Thickness measurement and close-up survey support for oil tankers, chemical tankers and bulk carriers under the ESP Code.
ExploreHull Structural Integrity
Substantial and excessive corrosion, pitting, grooving, buckling and fatigue cracks, with magnetic particle and penetrant crack detection.
ExploreShip Piping Inspection
Wall-thickness gauging of cargo, ballast, fuel, sea-water and fire-main piping, with minimum-wall checks and isometric sketches.
ExploreScrubber Piping Inspection
EGCS wash-water and overboard discharge piping, the hull penetration area and scrubber welds, checked between dockings.
ExploreIHM (Inventory of Hazardous Materials)
IHM Part I surveys, sampling and maintenance for the EU Ship Recycling Regulation and the Hong Kong Convention.
ExploreMarine 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.
ExploreTulcea and the approach through the Danube Delta
Tulcea is the largest town in the Danube Delta region and the last substantial port on the river before the delta spreads into its arms. Ships arrive either from upriver, from Galați and Brăila, or from the sea along the Sulina channel, the navigable route that carries almost all commercial traffic through the delta. Navigation is controlled by the river's depth, which changes with the seasons and with the rain and snow upstream, and by the regular dredging that keeps the channel open. The surroundings are a protected natural area, and that shapes what can be built and how.
The cargo handled at Tulcea reflects its industrial base. Bulk and break-bulk cargoes pass over the quays, including raw materials for local industry and products for onward shipment, and river-sea ships and barges carry much of it. Alongside commercial cargo, Tulcea has a large passenger and excursion trade, with ferries and tourist vessels running into the delta, and a steady presence of Romanian authority craft, survey boats and pilots. The shipyard on the riverbank adds a different kind of vessel, built for owners elsewhere in Europe and further afield.
Seasons set the rhythm of the port. Spring brings high water and the start of the tourist season, summer sees the delta fleet at its busiest, and autumn can bring low water that limits loaded draught. In severe winters, ice in the river can interrupt navigation for a time. For gauging, the quiet months are useful because passenger craft and workboats are available for maintenance and ships idled by ice or low water lie alongside with empty tanks. The overall demand is small but regular, and often tied to planned maintenance windows.
Where ships can be gauged at Tulcea
The shipyard is the natural centre for structured work. Vard Tulcea is a newbuilding yard, so most of the steel there is new, but its slipways and quays host hull sections, blocks and vessels at different stages, and condition checks at handover or after modification are a common request. If a ship needs a drydock rather than a quay, the superintendent should check with the agent which dock capacity exists on the river and what a docking elsewhere would involve before committing to a plan at Tulcea.
Cargo ships and passenger craft are gauged alongside. At the cargo quays, holds are available once a ship is discharged, and ballast tanks, deck plating and hatch covers can be measured around cargo work. At the passenger quays, vessels between excursion seasons can have hull, tank and deck structure measured at a convenient berth. Anything below the waterline that cannot be reached from inside will normally need a docking, and for river vessels that means one of the yards on the lower Danube or the Black Sea coast.
- Vard Tulcea shipyard — specialised newbuilding on the riverbank; condition gauging of hulls and vessels at handover or after conversion.
- Commercial cargo quays — bulk and break-bulk berths; holds, tank tops and deck gauged between discharge and loading.
- Passenger and excursion quays — delta cruise craft and ferries; hull, bilge, tank and deck measurement between seasons.
- River lay-by berths — ships idled by ice, low water or a lack of cargo; thorough tank and deck work alongside.
- Docking alternatives — Galați, Constanța and Mangalia for ships whose underwater plating needs a drydock rather than a quay.
Thickness measurement through the survey cycle at Tulcea
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 Tulcea, we agree the programme with the class and the owner before the team mobilises.
| Survey | When it falls | What the thickness measurement usually covers |
|---|---|---|
| Annual survey | Every year, within three months of the anniversary date | General examination. Gauging where the surveyor finds suspect areas or where substantial corrosion was recorded at an earlier survey. |
| Intermediate survey | In place of the second or third annual survey | Suspect 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. 1 | Around 5 years | The first full baseline: suspect areas and selected plating and stiffeners, usually with modest steel renewal. |
| Renewal survey No. 2 | Around 10 years | Wider gauging of deck, bottom and side plating, transverse sections across the cargo area on ESP ships, and more close-up survey. |
| Renewal survey No. 3 | Around 15 years | Extensive 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 later | Around 20 and 25 years | Gauging extended to most structural members in cargo and ballast spaces. Charterers often add a Condition Assessment Programme. |
| Docking survey | Twice in each five-year period | Bottom and side shell, sea chests, rudder and stern area while the hull is dry; suspect bottom plating gauged. |
Port state control and the Delta's rules
Ships calling at Tulcea are subject to port state control by the Romanian Naval Authority under the Paris MoU and the Black Sea MoU, and river-sea vessels are also examined for their suitability on inland waterways. Because the delta is a protected natural area with strong environmental controls, expectations around oil, ballast and waste handling are taken seriously, and a ship with corroded tanks or leaking piping is a greater concern here than on an open coast. Measured thickness records show where a vessel's boundaries stand.
EU rules also apply to ships entering Romanian ports, including the Inventory of Hazardous Materials, emissions trading where a voyage qualifies and FuelEU Maritime. Romania's membership of the Schengen area means technicians travelling from India need Schengen visas. For owners of passenger vessels, the combination of environmental sensitivity and public-safety duties makes regular structural checks especially valuable, and they can be scheduled in the months when the excursion fleet is laid up.
Wherever a ship is outside a sulphur emission control area, the global 0.50% sulphur cap applies, and many of the ships calling at Tulcea 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 gauging jobs at Tulcea
Work at Tulcea is smaller in volume than at the large sea ports but varied in type. It combines newbuild-yard condition checks, passenger vessel maintenance gauging and the occasional cargo ship in need of a survey record. Each scope below is fitted to the vessel's survey position, the access that the quay or yard allows and the tanks and spaces that are empty on the day, and agreed with the superintendent before the team leaves India.
- Condition gauging of a vessel at handover from the shipyard, measuring hull plating and tank boundaries as a baseline record.
- Winter-season gauging of a passenger or excursion vessel, covering bilge, shell, tank boundaries and deck plating before the next season begins.
- Hold and tank-top measurement on a river-sea cargo ship between discharge and loading at a Tulcea quay.
- Pre-purchase gauging of a workboat, survey vessel or small coaster, giving a buyer deck, shell and internal structure readings.
- Ballast tank and piping measurement on an ageing river-sea ship idled by low water or ice, using the pause for a thorough programme.
How a thickness measurement job runs at Tulcea
The sequence for a thickness measurement job at Tulcea is short and written down, so the yard, the surveyor and the superintendent know who arranges what.
Bucharest Henri Coandă Airport is the main international gateway, followed by a long road journey to Tulcea; Constanța is a shorter transfer for some routings, and a small local airport exists with limited services. The shipyard and the commercial quays are controlled facilities, so the ship's agent arranges gate passes for the technicians and equipment from passport details sent in advance. Romania is a Schengen state, so the team travelling from India needs Schengen visas, planned alongside the vessel's schedule.
- 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
- River-sea cargo ships
- Bulk and break-bulk carriers
- Push-tow barges
- Delta passenger and excursion vessels
- Pilot, survey and authority craft
- Specialised newbuilds from the shipyard
- Dredgers and workboats
Frequently asked questions
Do you gauge newbuilds at the Tulcea shipyard?
We can take thickness readings on completed vessels or hull sections as a baseline record at handover, where the yard or the owner asks for one. Newbuild steel is expected to be at nominal thickness, so the readings serve as documentation rather than wastage measurement. We agree access and scope with the yard through the owner's superintendent first.
Can a passenger vessel be gauged between excursion seasons?
Yes, and that is usually the best time. In the quieter months the vessel lies at a quay with tanks and bilges accessible, nobody is boarding, and crew availability is better. We measure shell, bilge, tank boundaries and deck plating, and record the figures against the class requirements the vessel trades under.
Is there a dry dock at Tulcea for bottom plating?
Dock capacity on the Danube is limited, and the shipyard at Tulcea is set up for building rather than repair. We check availability through the agent for the dates you need. If no dock suits, we gauge what is reachable from inside at Tulcea and plan the underwater shell for a docking at Galați, Constanța or another yard.
Does ice or low water affect scheduling at Tulcea?
It can, mostly through the ship's movements. Ice in a hard winter or low water in late summer may hold a ship at the quay or delay its arrival. Because we mobilise from India only when the date is firm, we ask for early warning of delays and re-plan the visas and travel without waiting for the vessel to sail.
Can one trip cover Tulcea, Galați and Brăila?
Often, yes. The three Danube ports lie along the lower river, and Constanța is the main sea port beyond. For a fleet or a shipyard group with vessels at several of them, one mobilisation from India with a planned route reduces travel and makes better use of each Schengen visa, provided the ships' dates line up.
Does thickness measurement at Tulcea 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 QuoteRequest 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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