Most boats reach the European market the ordinary way: the manufacturer carries out the conformity assessment, signs the Declaration of Conformity, and affixes the CE marking before the boat is ever sold. But a significant number of vessels arrive by a different door — and for those, the route to compliance is the Post-Construction Assessment, or PCA.

The most common misconception is that PCA is about age. It is not. A brand-new, never-launched boat can require a PCA, and a decades-old vessel may not. What triggers a PCA is the absence of a manufacturer who has taken legal responsibility for the craft’s CE compliance.

When PCA is required

  1. Private import of a non-EU vessel that does not already carry valid CE marking, before it is put into service.
  2. Major modification or conversion — a change of propulsion, a major engine modification, or an alteration significant enough that the vessel may no longer meet the essential requirements. Changing declared limitations such as design category or maximum persons can itself amount to a major conversion.
  3. A boat built for own use that is placed on the market before the end of the five-year period following its entry into service.

Who can perform it

A PCA is carried out by an independent, accredited Notified Body. The assessment covers all applicable essential safety and environmental requirements — structure, stability, electrical systems, noise, and exhaust emissions — on the individual vessel rather than a production type. There are no separate ‘modules’ defined for PCA in the directive; Notified Bodies are guided to follow, as far as practical, the procedures of module G and to apply the relevant ISO standards.

The typical process

  1. Scoping — establishing which trigger applies and what evidence already exists for the vessel.
  2. Documentation — assembling a complete technical file covering the craft’s systems and construction.
  3. Survey and testing — physical inspection, with stability, noise, and exhaust checks as applicable.
  4. Assessment — the Notified Body evaluates the file and the vessel against the essential requirements.
  5. Declaration and marking — on a positive outcome, the responsible person signs the Declaration of Conformity and the craft is marked.

Who carries the responsibility — and why a consultancy exists

A defining feature of PCA is that the legal obligation sits with the person placing the boat on the market or putting it into service — the private importer, the owner who commissioned the conversion, or the builder selling early. There is also a rule that explains the structure of the whole field: under RCD II, the Notified Body that certifies a vessel through PCA may not also be the party that prepares its compliance documentation. A certifier approving a file it wrote itself would be a conflict of interest, and the directive does not permit it.

In practice this means the applicant engages two distinct parties: a consultancy to prepare the documentation and bring the vessel to a submission-ready state, and an independent, accredited Notified Body to assess it and issue the certificate. This separation keeps every assessment genuinely independent and every certificate defensible. It is precisely the role Arventis Marine occupies — we prepare owners, importers, and yards for assessment; the conformity decision is made independently by the Notified Body. We never assess our own work, and we never promise an outcome that is not ours to give.

Common pitfalls

  • Moving or selling a boat before the assessment is complete — the obligation must be met before the craft is placed on the market or put into service.
  • Assuming a US or other non-EU certificate transfers — it does not; compliance is assessed against the EU requirements.
  • Underestimating the technical file — missing drawings and calculations are the most common cause of delay.
  • Discovering only late that a planned conversion was ‘major’ — by which point options have narrowed.

Expected timeline

A straightforward PCA on a well-documented vessel can move quickly; a complex or poorly documented case can take considerably longer, driven almost entirely by how complete the technical file is at the outset. The single biggest lever on timeline is preparation before the Notified Body is engaged — which is exactly where early advice earns its keep.

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