How long is a 'prolonged blast' typically transmitted?

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Multiple Choice

How long is a 'prolonged blast' typically transmitted?

Explanation:
In sound signaling, a prolonged blast is defined as lasting four to six seconds. This duration is longer than a short blast, making the signal clearly audible and unmistakable at distance, especially in reduced visibility or noisy conditions. The 4–6 second window provides a clear, standardized interval that distinguishes a deliberate, sustained signal from brief emissions, which helps other vessels correctly interpret the intent.

In sound signaling, a prolonged blast is defined as lasting four to six seconds. This duration is longer than a short blast, making the signal clearly audible and unmistakable at distance, especially in reduced visibility or noisy conditions. The 4–6 second window provides a clear, standardized interval that distinguishes a deliberate, sustained signal from brief emissions, which helps other vessels correctly interpret the intent.

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