Buoyage pilotage

Steer to harbour by reading the marks. Get it wrong and you run aground.

Steer with arrow keys, A/D or buttons (tap for 10° or hold to turn). Throttle with W and S. IALA marks, Region A.

Related questions

• If lit, what is the regulation colour of a safe water mark’s light?
• At night you see a mark with a yellow light flashing in groups of 5 every 20 seconds. Which mark is it?
• Approaching Cangas do Morrazo harbour at night, abeam of Punta Borneira, we see ahead a red Fl(2+1) light. If our port lies in the secondary channel, how do we reach Cangas?
• Isolated danger mark lights are grouped in:
• Safe water marks may:
• What does a cardinal mark indicate?
• On safe water marks, mark the CORRECT answer.
• Entering Puerto Sherry, we see ahead a red can buoy. What is the right way to manoeuvre?
• The light of isolated danger marks, if lit:
• A cardinal mark can NOT be used to:
• The shape of safe water marks is:
• The shape of special marks is: