RYA Yachtmaster — UK

Practice questions (with answers)

1. Where it is impracticable for a seaplane or WIG craft to show the lights and shapes prescribed in Part C, she must:

   1. AExhibit only her aviation navigation lights, because Part C does not apply to aircraft
   2. BExhibit lights and shapes as closely similar as possible in characteristics and position to those prescribed
   3. CExhibit the lights and shapes of a power-driven vessel of less than 12 metres in length, whatever her actual size
   4. DExhibit an all-round flashing yellow light, like an air-cushion vessel in non-displacement mode
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   Correct answer: B. Exhibit lights and shapes as closely similar as possible in characteristics and position to those prescribed

   Rule 31: where compliance is impracticable, seaplanes and WIG craft shall exhibit lights and shapes as closely similar in characteristics and position as possible.

2. A 'short blast' is defined as a blast of about:

   1. AHalf a second
   2. BOne second
   3. CThree seconds
   4. DFive seconds
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   Correct answer: B. One second

   Rule 32(b): a short blast means a blast of about one second's duration.

3. A vessel of 100 metres or more must carry:

   1. AA whistle only
   2. BA whistle and bell
   3. CA whistle, bell, and gong
   4. DA whistle, bell, gong, and cannon
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   Correct answer: C. A whistle, bell, and gong

   Rule 33: vessels 100m+ must have a whistle, bell, AND gong.

4. Signals to attract attention must:

   1. ABe chosen from the distress signals listed in Annex IV to the Rules
   2. BNot be mistaken for any prescribed signal or aid to navigation
   3. CBe made only by whistle, so that they are not confused with lights
   4. DBe made only by radio, on the distress and calling channel
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   Correct answer: B. Not be mistaken for any prescribed signal or aid to navigation

   Rule 36: signals to attract attention must not be mistaken for any other prescribed signal or navigation aid.

5. An isolated danger mark indicates:

   1. AThe side of a danger where the safe water lies
   2. BA danger with navigable water all around
   3. CThe mid-channel point of a fairway
   4. DA newly discovered danger, not yet charted
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   Correct answer: B. A danger with navigable water all around

   An isolated danger mark is on or near a danger with navigable water around it. Consult charts and nautical publications for the extent of the danger and safe passing distance.

6. Safe water marks have:

   1. ARed and white vertical stripes
   2. BBlack and yellow horizontal bands
   3. CAll yellow colour
   4. DBlue and yellow vertical stripes
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   Correct answer: A. Red and white vertical stripes

   Safe water marks are red and white vertical stripes, indicating navigable water all around.

7. Special marks are coloured:

   1. ARed
   2. BGreen
   3. CYellow
   4. DBlue and yellow
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   Correct answer: C. Yellow

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

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

   1. AThe lateral shapes swap sides — cans to starboard
   2. BThe colours are reversed — red to starboard
   3. CCardinal marks swap their black and yellow bands
   4. DOnly the topmarks differ
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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.

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