Harmonized System of Survey and Certification (HSSC)
HSSC harmonizes instruments within the system, normally around the five-year cargo cycle, but does not make every certificate's surveys, validity and extensions identical.
Operational Explanation
HSSC harmonizes instruments within the system, normally around the five-year cargo cycle, but does not make every certificate's surveys, validity and extensions identical.
Regulatory Reference
IMO Resolution A.1207(34) and the provisions of each HSSC Convention.
Scope of Application
Passenger safety remains annual; cargo radio uses periodical survey; instruments outside HSSC retain their own regime.
Procedure / How to Complete It
- Identify the certificate and applicable provision.
- Map initial, annual/periodical, intermediate and renewal without generalising.
- Separate an extension up to three months from short-voyage grace up to one month.
- Obtain the required Administration authorisation.
Practical Example
A cargo ship may coordinate five-year certificates, while passenger safety remains annual and AFS follows its own regime.
What Typically Goes Wrong
Writing synchronizes everything, using one cycle for every certificate, or treating extension and grace as generic allowances.
Common Mistakes Mistake Library
| Mistake | Consequence | How to Avoid It |
|---|---|---|
| Writing synchronizes everything, using one cycle for every certificate, or treating extension and grace as generic allowances. | Non-compliant decision or treatment | Follow the approved arrangement and applicable sources |
What the PSCO Checks
Operational Tips
- Separate current requirement, class/maker, SMS and voluntary guidance.
- Do not improvise tests, thresholds or intervals.
- Record deviations and corrective action.
Preparation checklist
- HSSC instrument checked
- Correct terminology
- Passenger/cargo distinct
- Extension conditional
FAQ
Related Topics
Last substantive revision of this page: 31 August 2026 · page fingerprint 3745722273d6