Which duration corresponds to a short blast on the whistle?

Which duration corresponds to a short blast on the whistle?

• A. 1 second
• B. 2 seconds
• C. 0.5 seconds
• D. 3 seconds

Answer: (A)

A short blast is defined by a duration of about one second. This specific length helps other vessels recognize the signal quickly and distinguish it from a long blast, which is typically four to six seconds. So, among the options, the one-second duration matches the standard short blast. Half a second is too brief to be a standard short blast; two or three seconds are longer than a short blast and do not fit the long-blast duration either. Therefore, one second is the correct match for a short blast.

A short blast is defined by a duration of about one second. This specific length helps other vessels recognize the signal quickly and distinguish it from a long blast, which is typically four to six seconds. So, among the options, the one-second duration matches the standard short blast. Half a second is too brief to be a standard short blast; two or three seconds are longer than a short blast and do not fit the long-blast duration either. Therefore, one second is the correct match for a short blast.