Navigation and Waterway Regulations (CEVNI and Inland Rules)
The regulatory layer cake
A Flanders boatmaster works within stacked rules: international collision regulations, the CEVNI code for inland waterways, Belgian and Flemish regional decrees, and local police regulations for specific canals, locks and bridges. Questions test whether you know which layer governs a situation and who has priority. CEVNI supplies the visual system of signs on buoys, dikes and bridges, plus right-of-way logic for inland traffic.
Core concepts to master
Know the sign families: prohibition, mandatory instruction, restriction, recommendation and information. Understand fairway marking, the meaning of red and green buoys when travelling upstream versus downstream, and the rule that marks are read in the direction of the conventional current. Learn the hierarchy for meeting and overtaking, the side on which you pass, and the obligations of the vessel being overtaken. Understand lock procedures, waiting areas, priority for ferries and pushed convoys, and the rules for narrow sections and bridge arches.
Traps in exam questions
- Confusing upstream and downstream mark meanings; the exam often states the direction of travel only once.
- Assuming a sign is advisory when it is mandatory.
- Forgetting that local regulations can override general rules.
- Mixing maritime COLREG logic with inland CEVNI logic in estuary areas.
Worked rule of thumb
When a question gives a sign and a direction of travel, first ask: is this a prohibition or an obligation? Second: does the sign apply to my vessel class? Third: is there a local exception? Only then choose the answer. If two answers seem valid, the one citing the more specific rule is usually correct.