Research on the familiarity and use of day signals on sailing vessels

Please take a minute to complete a questionnaire that aims to test your knowledge of Regulations for Preventing Collisions at Sea regarding the use of day signals on sailing vessels.


The Regulations for Preventing Collisions at Sea These Rules are adopted in order to maintain adequate level of safety of navigation at sea and they show that the day shapes required by these Rules are the integral part of sailing rules, and seafarers should always obey them during their stay at sea.


The research is conducted anonymously, and we would ask you to answer the questions honestly. It will only take you a few minutes to fill out the questionnaire. We sincerely thank you for your participation and time.

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Indicate the rank (licence, competency) in which you sail:

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Indicate how many years of navigational experience you have:

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Assess your knowledge of the signs which are to be exhibited on sailing vessels as required by COLREG.


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Explain the meaning of a conical shape with apex down on a sailing vessel.
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What day signal shall exhibit a vessel proceeding under sail when also being propelled by machinery?

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How many times have you proceeded under sails and at the same time also been propelled by machinery?
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How many times have you displayed a conical shape with apex down on your vessel?
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How many times have you proceeded under sails and at the same time also been propelled by machinery but you DIDN'T display a conical shape with apex down on your vessel?
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What was your reason for NOT displaying a conical shape with apex down when you had to as per COLREG? (If applicable).
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What day signal must be exibited by a ship at anchor?

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How many times have you seen a sailing vessel displaying a conical shape with apex down?

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