Which duration is a 'short blast' on the whistle?

Which duration is a 'short blast' on the whistle?

• A. One second
• B. Two seconds
• C. Four seconds
• D. Half a second

Answer: (A)

A short blast has a defined, concise duration, about one second. In maritime whistle signaling, short blasts are quick signals used to indicate changes or intentions, while a long or prolonged blast lasts roughly four to six seconds. So, one second fits the standard length for a short blast, whereas four seconds is too long, and half a second is too short to be counted as a proper short blast; two seconds is longer than the typical short blast.

A short blast has a defined, concise duration, about one second. In maritime whistle signaling, short blasts are quick signals used to indicate changes or intentions, while a long or prolonged blast lasts roughly four to six seconds. So, one second fits the standard length for a short blast, whereas four seconds is too long, and half a second is too short to be counted as a proper short blast; two seconds is longer than the typical short blast.