thickness measuremenTS


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Flaw Detection
Thickness Measurement
The company’s engineers identify the degree of general and local wear using ultrasonic thickness measurement, which most accurately determines the thickness of the measured object.

The results of measurements are compared with  compliance with standard values. Next, we draw up a report with  recommendations for the repair or replacement of  worn and  damaged structures.

SpecMorService is recognized by the RUSSIAN MARITIME REGISTER OF SHIPPING, RUSSIAN RIVER REGISTER OF SHIPPING, Nippon Kaiji Kiokay, BUREAU VERITAS, RINA Services S.p.A as a provider of services for the ship repair, flaw detection and survey of ship hulls and ship equipment.
Certified by RMRS, RRR, NKK, BV, RINA

thickness measurements services



Ultrasonic thickness measurement is the most accurate and widespread method for assessing the technical condition of metal structures. It is used to measure the residual thickness of an object and assess its acceptability for further operation.

The advantages of this method are the ability to control the thickness of an object with access only from one side, high productivity and measurement accuracy over the entire width of various thicknesses, control of metallic and non-metallic materials, including through paint.

This method is indispensable in assessing the condition of ship hulls, marine and enclosing structures.
Ultrasonic thickness measurement


The unit sends a strong electrical signal to the probe, causing it to emit a high energy pulse of ultrasound. The transmitted ultrasound pulse travels through both the coating and the metal and reflects from the back wall. The reflected sound waves then reverberates within the metal, with only a small portion of the echo travelling back through the coating each time.

The timing between the small echoes gives the timing of the echoes within the metal, which relate to the metal thickness. The returned echoes need not be consecutive as the thickness gauge will interpret them automatically and calculate the thickness.
Ultrasonic Thickness Gauge Operating Principle


During control, measurement errors may occur due to non-parallelism of object surfaces, high roughness of internal and external surfaces in cases of inhomogeneous structure of the metal case of products, discontinuities or other metallurgical defects. Therefore, for measurement accuracy, the surface is prepared and control points are selected.
surface preparation


Inspection of hull structures with thickness measurement in the pre-repair period gives an understanding of the upcoming volumes of metal replacement, reducing the time for repairing the ship in the dock and saving the customer’s money.

Contact SpetsMorService and get the service of thickness measurement on your vessel with high quality, professionally, turnkey
Fault detection and repair is carried out on the basis of relevant certificates.
SpecMorService is recognized by the RUSSIAN MARITIME REGISTER OF SHIPPING, RUSSIAN RIVER REGISTER OF SHIPPING, Nippon Kaiji Kiokay, BUREAU VERITAS, RINA Services S.p.A as a provider of services for the ship repair, fault detection and survey of ship hulls and ship equipment.
International certification
Specmorservice  is the only company at the North-West of the Russian Federation certified by the international classification society NKK for carrying out work on  fault detection and thickness measurements .
Nippon Kaiji Kiokay
SpeсMorService is certified by the international classification society RINA Services S.p.A. and recognized as an approved facility for thickness measurements and fault detection.
View the Certificate
View the Certificate
Certified by the Dutch classification society Bureau Veritas for thickness measurement and fault detection of hulls.
Certified by the RUSSIAN RIVER REGISTER OF SHIPPING for carrying out ship repair work, fault detection of hulls and ship equipment.
View the Certificate
View the Certificate
SpecMorService is recognized by the RUSSIAN MARITIME REGISTER OF SHIPPING as a provider of ship repair, fault detection and survey.
SpeсMorService is recognized by the RMRS as an enterprise carrying out re-equipment, modernization and repair of ships, hull structures, etc.
View the Certificate
View the Certificate
Telephone: +7 962 691 66 16, +7 812 339 97 19
Adress: St. Petersburg, st. Dvinskaya 10, building 3, office 810

INN 7804329447 (Taxpayer Identification Number)
KPP 780401001 (Tax Registration Reason Code)
OGRN 1067847071214 (Primary State Registration Number)
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