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Operational Guide · Registers & Logbooks

Coordination between Class Surveys and Statutory Surveys (RO)

The statutory certificate attests that the ship may sail, the class certificate that the ship is structurally sound: two different things, but in the great majority of cases the same surveyor verifies both during the same visit on board.

Recognized OrganizationRO Codeclass surveystatutory survey

Operational Explanation

The Classification Society often acts as a Recognized Organization (RO) on behalf of the Flag Administration, with express delegation to conduct surveys and issue statutory certificates (under IMO Conventions: SOLAS, MARPOL, Load Line) in addition to its own class certificates. This dual function makes it possible, in everyday practice, to coordinate class and statutory surveys into a single visit by the surveyor on board, reducing the number of operational interruptions for the ship.

Coordination is not automatic: it requires the Company's technical office to plan in advance which surveys (class and statutory) fall due in the same time window, verifying that the HSSC (Harmonized System of Survey and Certification) cycle is aligned for both categories of certificates, and avoiding overlaps or gaps that would force separate surveyor visits.

Regulatory Reference

The reference framework is the RO Code (Res. MSC.349(92) and MEPC.237(65)), which governs the delegation of authority from the Flag Administration to the Classification Society for issuing statutory certificates; the HSSC cycle synchronizes the survey windows (Annual, Intermediate, Renewal) for both class and statutory certificates.

Scope of Application

Every ship whose Classification Society also acts as an RO on behalf of the Flag Administration, with the Superintendent/technical office responsible for planning class and statutory surveys in a coordinated manner.

Procedure / How to Complete It

  1. Verify which class surveys and which statutory surveys fall due in the same time window of the HSSC cycle.
  2. Coordinate with the Classification Society/RO a single surveyor visit covering both categories of survey when the windows coincide.
  3. Verify that the RO's delegation of authority actually covers all statutory certificates relevant to the ship, since some Flag Administrations keep certain specific verifications in-house.
  4. Maintain a documented plan of the HSSC cycle that clearly distinguishes class deadlines from statutory ones, while highlighting overlapping windows.
  5. In the event of a change of Classification Society (transfer of class), verify that coordination between class and statutory surveys is re-established with the new RO.

Practical Example

Example: the technical office verifies that the class Intermediate Survey and the Intermediate Survey for the Cargo Ship Safety Certificate fall within the same 6-month window around the second/third anniversary, and arranges a single visit by the RO surveyor covering both surveys, reducing planned operational interruptions from two to one.

Real Cases

Effective coordination between class and statutory surveys depends on the Company's technical office understanding that the Cargo Ship Safety Construction Certificate — although a statutory (flag) requirement under SOLAS — is typically issued by the class surveyor acting as an RO: a distinction that is often unclear and, if not understood, leads to planning separate surveys when they could be coordinated into a single visit.

Common Mistakes Mistake Library

MistakeConsequenceHow to avoid it
Class and statutory surveys planned separately despite falling within the same HSSC time windowDoubled operational interruptions and additional cost for two surveyor visits instead of oneAlways check overlapping windows between class and statutory surveys before planning separate visits
RO's delegation of authority assumed complete for all of the ship's statutory certificatesLate discovery that some verifications remain the direct responsibility of the Flag Administration, not the ROAlways verify the exact extent of the RO's delegation of authority for the ship's specific flag
Coordination between class and statutory surveys not re-established after a change of Classification SocietyTemporary loss of coordinated-survey efficiency, reverting to separate visitsExplicitly re-establish coordination with the new RO immediately after a transfer of class

PSC Observations

PSCOs may verify that statutory certificates have been issued by a Recognized Organization actually authorized by the Flag Administration for that specific certificate category, especially where there is doubt about the validity of the delegation of authority.

Operational Tips

Checklist

FAQ

Why can the same surveyor issue both class certificates and statutory certificates?
Because the Classification Society often acts as a Recognized Organization (RO) on behalf of the Flag Administration, with express delegation under the RO Code to conduct surveys and issue statutory certificates in addition to its own class certificates.
Does the RO's delegation of authority always cover all of the ship's statutory certificates?
No, not necessarily: some Flag Administrations keep certain specific verifications in-house, so the exact extent of the delegation must always be verified for the ship's specific flag.
What happens to the coordination between class and statutory surveys after a change of Classification Society?
It must be explicitly re-established with the new RO: coordination does not transfer automatically, and it is an aspect to be actively verified during a transfer of class.
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Related Topics

Harmonized System of Survey and Certification (HSSC)Managing Surveys under Dual/Multiple Classification