33 CFR 86.03 - Limits of fundamental frequencies.

§ 86.03 Limits of fundamental frequencies.
To ensure a wide variety of whistle characteristics, the fundamental frequency of a whistle shall be between the following limits:
(a) 70-200 Hz, for a vessel 200 meters or more in length;
(b) 130-350 Hz, for a vessel 75 meters but less than 200 meters in length;
(c) 250-525 Hz, for a vessel less than 75 meters in length.
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§ 86.03 Approval. [Reserved]

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