Patrón de Yate — Spain

Practice questions (with answers)

1. Special marks are coloured:

   1. Red
   2. Green
   3. Yellow
   4. Blue and yellow
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   Correct answer: C. Yellow

   Special marks are yellow, indicating special areas like military zones, cables, or pipelines.

2. Which factor is NOT listed in Rule 6 for determining safe speed?

   1. State of visibility
   2. Traffic density
   3. Vessel's commercial schedule
   4. Stopping distance and turning ability
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   Correct answer: C. Vessel's commercial schedule

   Rule 6 lists visibility, traffic density, manoeuvrability, etc. Commercial schedule is never a factor in safe speed determination.

3. If there is any doubt about whether risk of collision exists:

   1. Wait for the other vessel to take action
   2. Assume no risk until confirmed by radar
   3. The risk shall be deemed to exist
   4. Call the other vessel on VHF to clarify
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   Correct answer: C. The risk shall be deemed to exist

   Rule 7(a): if there is any doubt, such risk shall be deemed to exist.

4. If circumstances admit, course alterations to avoid collision shall be:

   1. As small as possible to minimize deviation
   2. Large enough to be readily apparent to the other vessel
   3. Made only if reducing speed is not possible
   4. Avoided if possible in favour of speed reduction
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   Correct answer: B. Large enough to be readily apparent to the other vessel

   Rule 8(b) requires alterations large enough to be readily apparent to another vessel observing visually or by radar, if circumstances admit.

5. A vessel less than 20m in a narrow channel:

   1. Has right of way over all other vessels
   2. Shall not impede vessels that can only navigate within the channel
   3. Must anchor until the channel is clear
   4. May navigate in the centre of the channel
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   Correct answer: B. Shall not impede vessels that can only navigate within the channel

   Rule 9(b): vessels under 20m shall not impede vessels which can safely navigate only within the channel.

6. How does IALA Region B differ from Region A?

   1. It uses different shapes only
   2. The colours are reversed — red to starboard
   3. It only uses cardinal marks
   4. There is no difference
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   Correct answer: B. The colours are reversed — red to starboard

   Region A: port-hand red, starboard-hand green. Region B: port-hand green, starboard-hand red. Interpret both in the charted conventional direction of buoyage.

7. An East Cardinal mark shows how many quick flashes?

   1. 1 flash
   2. 3 flashes
   3. 6 flashes + long flash
   4. 9 flashes
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   Correct answer: B. 3 flashes

   White lights, when fitted: North Q or VQ; East VQ(3) 5 s or Q(3) 10 s; South VQ(6)+LFl 10 s or Q(6)+LFl 15 s; West VQ(9) 10 s or Q(9) 15 s. The long flash lasts at least 2 s.

8. If fitted, the topmark of an isolated danger mark is:

   1. A single red sphere
   2. Two black spheres vertically
   3. A yellow X-shape
   4. Two cones pointing up
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   Correct answer: B. Two black spheres vertically

   Isolated danger marks have two black spheres (balls) as topmark. (if fitted).

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