PRS performs classification survey on the basis of own Rules for the Classification and Construction.

As a result of technical supervision of construction, reconstruction and conversion of floating units PRS issues, and in result of supervision of the units in-service confirms existing or issues a new: 

  • Certificate of Class”– for all floating units covered by the requirements of the Rules for the Classification and Construction, and additionally.
  • Machinery Certificate” – for floating units with mechanical propulsion,
  • Certificate of Class for Refrigerating Plant” – for the floating units provided with refrigerating plant intended for cooling cargo spaces.

Prior to issue of a full-term Certificate of Class (valid for up to 5 years), a Temporary Certificate of Class (valid up to 5 months) is issued. The full-term certificate is issued by PRS Head Office, while the temporary certificate – by Branch Office or Survey Station which performed the survey.  The full-term certificate is issued before the expiry of temporary certificate validity, after the Head Office is ensured that the survey has been performed to the required scope and the floating unit complies with all applicable requirements of the Rules.

PRS starts the activities aimed at issuing appropriate certificates after concluding contract with the Client and after receiving the Client’s Application for classification and statutory services (Form 655a).

Further information on issuing the above classification documents are given in the PRS „Supervision Activity Regulations” (see more here) and in Part I – Classification Regulations of respective Rules for the Classification and Construction (see more here).



PRS performs also direct and indirect supervision of the manufacture of materials and products covered with the requirements of the Rules.

As a result of direct supervision, material/product is issued with:

  • Test Certificate”,


  • Certificate”.

The above documents, which have no validity limit, are issued by the Head Office, Branch Office or Survey Station which performs the survey.

In result of approval procedure within indirect survey of material/product manufacture, PRS issues:

  • Type Approval Certificate for the product

The Type Approval Certificate is valid for a maximum of 5 years. Based on the certificate, the manufacturer issues own documents for the products, where the reference is made to the number of the Type Approval Certificate. The documents issued by the manufacturer are equivalent to test certificates or certificates issued by PRS.

The manufacturers of materials or products and their representatives interested in receiving a PRS test certificate or certificate on performed surveys and tests for the given material or product, or a Type Approval Certificate, shall apply in this matter to the PRS Head Office or Field Office in a letter. Basic information on the material or product, its quantity and its manufacturer shall be enclosed with the letter.

Upon receiving the letter, PRS defines the extent of documentation to be submitted to PRS.

Prior to tests of material or product, the PRS surveyor carries out verification of the test stand. On the basis of agreed test programme, the tests of material or product are performed.
Based on documentation, positive results of the test stand verification and the tests, PRS issues a Test Certificate for the material or product, certificate on the performed surveys and  tests or Type Approval Certificate. 

Further information on the issue by PRS of the above documents is given in „Supervision Activity Regulations” (see more here), and in the bookmark (available here).

If the Application for Product Type Approval is directed to the Head Office, please contact the Office of PRS Director for Ship Division, e-mail: do@prs.pl.