boat whistle

Definitions of boat whistle. a whistle on a boat that is sounded as a warning. type of: whistle. acoustic device that forces air or steam against an edge or into a cavity and so produces a loud shrill sound.

verb (used without object),whis·tled, whis·tling. to make a clear musical sound, a series of such sounds, or a high-pitched, warbling sound by the forcible expulsion of the breath through a small opening formed by contracting the lips, or through the teeth, with the aid of the tongue.

a. : a small wind instrument in which sound is produced by the forcible passage of breath through a slit in a short tube. a police whistle. b. : a device through which air or steam is forced into a cavity or against a thin edge to produce a loud sound.

Definitions of whistle. the sound made when someone forces breath through pursed lips. type of: utterance, vocalization. the use of uttered sounds for auditory communication. the sound made by something moving rapidly or by steam coming out of a small aperture.

Not only are sound signals such as foghorns required by federal and international laws, but they are an important navigational and safety tool. Horns can warn boats away from ships, structures and areas where they might run aground.

Boats at least 39.4 feet to less than 65.6 feet in length - Must carry a whistle and a bell. The whistle must be audible for 1/2 nautical mile. The mouth of the bell must be at least 7.87 inches in diameter.

Whistling produces a loud and pitched sound that approximates a sine wave. These sounds travel well over large distances [1] and are easy to discern from other biological sounds by the rare occurrence of pure-tone sine waves in nature.

boatswain's whistle Fiction: Georg von Trapp summoned the children and staff with a whistle. Fact: Georg von Trapp summoned his children with a boatswain's whistle because it was the best way for them to hear him in their large house.

On this page you'll find 42 synonyms, antonyms, and words related to whistle, such as: blare, hiss, blast, fife, flute, and pipe.

One short blast tells other boaters, “I intend to pass you on my port (left side)." Two short blasts tell other boaters, “I intend to pass you on my starboard (right) side." Three short blasts tell other boaters, “I am backing up."

noun. : a double-ended deep-keel cutter-rigged Danish fishing boat.

Most of the underwater noise emitted from ships comes from propeller cavitation, which is a complex phenomenon to describe, but can be boiled down to a design issue that can cause a breakdown in water flow over the propeller blades, resulting in significant noise (and a loss in fuel efficiency).