Vessels: registrations, charters and incidents · France / Switzerland
Modified vessel: inspection and navigation title
A technical change must be examined against the vessel’s existing approval and intended operation. The French example concerns commercial pleasure vessels within division 241, up to 24 metres. Swiss inland rules require renewed inspection for important changes affecting the specified structural or safety characteristics. Link the original title, modified plans and inspection evidence; the preparation record does not clear the vessel for service.
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- Jurisdiction
- Vessel and class
- Existing title
- Technical modification
- Inspection evidence
- Official texts cited
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Which changes affect the characteristics recorded on the navigation certificate?
France: compare the approved configuration with structural, propulsion, capacity and equipment changes. Switzerland: identify changes affecting hull strength, stability, safety or construction particulars on the navigation permit, preserving the original and proposed records.
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Which vessel class and intended operation determine the applicable safety regime?
France: this example concerns commercial pleasure vessels with hull length up to 24 m under division 241. Switzerland: identify inland craft under the navigation ordinance separately from a registered seagoing ship; the two inspection frameworks are not interchangeable.
Arrêté23novembre1987, division241Navigation intérieure : ordonnance fédéraleNavigation maritime : texte fédéral suisse
Modification and navigation-title comparison
Synthetic example: fictional records. Modification and navigation-title comparison.
Synthetic example: fictional records · Modification and navigation-title comparison
- Jurisdiction
- France
- Vessel and class
- Vessel A, class to confirm
- Existing title
- Permit P1
- Technical modification
- Layout plans V2
- Inspection evidence
- Stability ST2, reply pending
Link the original title, modified plans and inspection evidence; the preparation record does not clear the vessel for service.
Which changes affect the characteristics recorded on the navigation certificate?
France: compare the approved configuration with structural, propulsion, capacity and equipment changes. Switzerland: identify changes affecting hull strength, stability, safety or construction particulars on the navigation permit, preserving the original and proposed records.
Arrêté23novembre1987, division241Navigation intérieure : ordonnance fédéraleNavigation maritime : texte fédéral suisse
Preparation reference: Modification and navigation-title comparison
| Preparation question | Point to verify |
|---|---|
| Which vessel class and intended operation determine the applicable safety regime? | France: this example concerns commercial pleasure vessels with hull length up to 24 m under division 241. Switzerland: identify inland craft under the navigation ordinance separately from a registered seagoing ship; the two inspection frameworks are not interchangeable. |
| Which changes affect the characteristics recorded on the navigation certificate? | France: compare the approved configuration with structural, propulsion, capacity and equipment changes. Switzerland: identify changes affecting hull strength, stability, safety or construction particulars on the navigation permit, preserving the original and proposed records. |
| When does the selected regime require a fresh inspection before recommissioning? | France: changes undermining initial approval must be submitted to the competent authority within the illustrated division 241 branch. Switzerland: ONI 102 requires the specified substantial inland modifications or repairs to undergo a new inspection before recommissioning. |
| What stability, structural or equipment evidence belongs to that inspection? | France: connect the modified configuration with dated plans and supporting safety or stability studies. Switzerland: preserve the corresponding structural, stability and equipment evidence for the special inspection; neither worksheet calculates whether those technical conditions are satisfied. |
Arrêté23novembre1987, division241Navigation intérieure : ordonnance fédéraleNavigation maritime : texte fédéral suisse
When does the selected regime require a fresh inspection before recommissioning?
France: changes undermining initial approval must be submitted to the competent authority within the illustrated division 241 branch. Switzerland: ONI 102 requires the specified substantial inland modifications or repairs to undergo a new inspection before recommissioning.
Arrêté23novembre1987, division241Navigation intérieure : ordonnance fédéraleNavigation maritime : texte fédéral suisse
What stability, structural or equipment evidence belongs to that inspection?
France: connect the modified configuration with dated plans and supporting safety or stability studies. Switzerland: preserve the corresponding structural, stability and equipment evidence for the special inspection; neither worksheet calculates whether those technical conditions are satisfied.
Arrêté23novembre1987, division241Navigation intérieure : ordonnance fédéraleNavigation maritime : texte fédéral suisse
Which official provision helps explain this situation?
A technical change must be examined against the vessel’s existing approval and intended operation. The French example concerns commercial pleasure vessels within division 241, up to 24 metres. Swiss inland rules require renewed inspection for important changes affecting the specified structural or safety characteristics. Link the original title, modified plans and inspection evidence; the preparation record does not clear the vessel for service.
Which authority or recognised body can examine the modified vessel?
France: identify the authority handling this vessel class and the actual approval correspondence. Switzerland: identify the competent navigation authority for the craft and waters; a contractor’s sign-off is not automatically the authority’s inspection decision.
Arrêté23novembre1987, division241Navigation intérieure : ordonnance fédéraleNavigation maritime : texte fédéral suisse
What limitations or conditions appear on the revised navigation title?
France: compare the final permit’s operating limits and home port with the intended commercial service. Switzerland: compare the revised navigation permit and retained conditions with the intended waters and operation, leaving unconfirmed changes explicit.
Arrêté23novembre1987, division241Navigation intérieure : ordonnance fédéraleNavigation maritime : texte fédéral suisse
How do the original certificate, modification record and inspection findings connect?
France: link the old approval, dated modification file and subsequent authority decision. Switzerland: keep the old permit, modification evidence and inspection outcome in the same chronology; completion of physical work alone does not establish an updated navigation title.
Arrêté23novembre1987, division241Navigation intérieure : ordonnance fédéraleNavigation maritime : texte fédéral suisse
Which outstanding technical questions prevent describing the vessel as cleared?
France: identify missing studies, inconsistent plans and unresolved authority reservations. Switzerland: identify outstanding inspection findings and missing permit evidence. In either country, preserve these unknowns rather than describing the vessel as cleared on the worksheet’s arithmetic or completeness alone.
Arrêté23novembre1987, division241Navigation intérieure : ordonnance fédéraleNavigation maritime : texte fédéral suisse
Which preparation steps come first?
Editorial preparation order, not a popularity or success-probability ranking. Identify the vessel class and existing title first, then match the changed characteristics to technical evidence and the authority’s decision.
Establish the vessel and operating category
Category determines the relevant French or Swiss inspection route. It precedes technical comparisons because an inland permit and a seagoing approval have different scope.
Arrêté23novembre1987, division241Navigation intérieure : ordonnance fédéraleNavigation maritime : texte fédéral suisse
Map changes against the approved configuration
Identify precisely what changed in structure, capacity or equipment. That map determines which existing studies can still describe the modified vessel.
Arrêté23novembre1987, division241Navigation intérieure : ordonnance fédéraleNavigation maritime : texte fédéral suisse
Reconcile the dated technical evidence
Associate plans, stability assumptions and test records with the actual configuration. This comes before relying on an inspection of a different version.
Arrêté23novembre1987, division241Navigation intérieure : ordonnance fédéraleNavigation maritime : texte fédéral suisse
Record inspection findings and unresolved conditions
Preserve the competent authority’s findings and responses separately from the contractor’s completion record. Only the actual decision establishes the authority’s position.
Arrêté23novembre1987, division241Navigation intérieure : ordonnance fédéraleNavigation maritime : texte fédéral suisse
Match the resulting title to intended service
Compare permitted waters, operating limits and configuration before recommissioning. Remaining documentary or technical conditions stay visible rather than becoming an assumed clearance.
Arrêté23novembre1987, division241Navigation intérieure : ordonnance fédéraleNavigation maritime : texte fédéral suisse
What other questions arise in this file?
Which changes affect the characteristics recorded on the navigation certificate?
France: compare the approved configuration with structural, propulsion, capacity and equipment changes. Switzerland: identify changes affecting hull strength, stability, safety or construction particulars on the navigation permit, preserving the original and proposed records.
Arrêté23novembre1987, division241Navigation intérieure : ordonnance fédéraleNavigation maritime : texte fédéral suisse
What stability, structural or equipment evidence belongs to that inspection?
France: connect the modified configuration with dated plans and supporting safety or stability studies. Switzerland: preserve the corresponding structural, stability and equipment evidence for the special inspection; neither worksheet calculates whether those technical conditions are satisfied.
Arrêté23novembre1987, division241Navigation intérieure : ordonnance fédéraleNavigation maritime : texte fédéral suisse
What limitations or conditions appear on the revised navigation title?
France: compare the final permit’s operating limits and home port with the intended commercial service. Switzerland: compare the revised navigation permit and retained conditions with the intended waters and operation, leaving unconfirmed changes explicit.
Arrêté23novembre1987, division241Navigation intérieure : ordonnance fédéraleNavigation maritime : texte fédéral suisse
Which outstanding technical questions prevent describing the vessel as cleared?
France: identify missing studies, inconsistent plans and unresolved authority reservations. Switzerland: identify outstanding inspection findings and missing permit evidence. In either country, preserve these unknowns rather than describing the vessel as cleared on the worksheet’s arithmetic or completeness alone.
Arrêté23novembre1987, division241Navigation intérieure : ordonnance fédéraleNavigation maritime : texte fédéral suisse
Which official references should you consult?
- Arrêté23novembre1987, division241www.legifrance.gouv.fr
- Navigation intérieure : ordonnance fédéralewww.fedlex.admin.ch
- Navigation maritime : texte fédéral suissewww.fedlex.admin.ch
Texts cited last checked: 3 November 2026