Start with Norway's buoyage system
Norway uses IALA Region A. In the conventional direction of buoyage, red lateral marks indicate the port-hand side of the channel and green marks the starboard-hand side. First establish that direction from the chart; do not assume it is the same as your present direction of travel.
Practise by drawing a simple channel and an arrow for the direction of buoyage. Trace a route in both directions and explain why the marks stay in place while their position relative to your boat changes.
Cardinal marks refer to compass directions
A cardinal mark indicates the side on which to pass relative to the mark: north of a north cardinal mark, east of an east mark, and so on. This is a compass direction, not a fixed instruction to turn left or right.
Check colour bands, any topmark and the light characteristic together. Norwegian marks do not always carry a topmark, so avoid learning a single feature in isolation. Confirm the surrounding depths and hazards on the chart before deciding on a route.
Compare the groups you confuse
Make a study card with four fields: the mark's name, identifying features, meaning and what the chart must clarify. Use the official Kystverket illustrations as the reference, then put the reference aside and complete the card from memory.
Include lateral, cardinal, isolated danger, safe water and special marks. Compare two easily confused examples and name one feature that distinguishes them. On the next attempt, mix them with other marks so the order does not give away the answer.
Connect English words to the chart
Port means babord; starboard means styrbord. A fairway is a farled, a shoal is a grunne, and a navigation mark is a sjømerke. Use the English term in a whole explanation rather than memorising a loose word pair.
For example, describe the mark, identify the direction that matters and explain which chart information you would check next. If you cannot explain the route without pointing at an answer option, return to the chart and work through the situation again.
Frequently asked questions
Is a red mark always kept on my port side?
No. The port-hand rule for red lateral marks in Region A refers to the conventional direction of buoyage. Establish that direction before applying it.
Does a north cardinal mark mean turn north?
It identifies navigable water on the north side of the mark. The action needed depends on your position, course and the charted surroundings.
Can colour alone identify every mark?
Use the available features together, including shape, topmark and light characteristic, and check the chart. Do not rely on a single isolated colour.
Official sources
Information checked against these sources on .