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Sound intensity: 131 dB
Approved electronic whistle complete with loudspeaker, built-in membrane control panel and electronic controller. New ultrasonic heating system for improved acoustic membrane performance. Meets COLREG 1972 IMO class III international ...
Marco
Sound intensity: 131 dB
Approved electronic whistle complete with loudspeaker, built-in membrane control panel and electronic controller. New ultrasonic heating system for improved acoustic membrane performance. Meets COLREG 1972 IMO class III international ...
Marco
Sound intensity: 132 dB
Approved whistle complete with chromed or white horn Ø 300 mm. Electric valve and mounting accessories, for compressed air operation 6/12 bar. Meets COLREG 1972 IMO class III regulations. Approvals: RINA, LLOYD'S REGISTER ...
Marco
Sound intensity: 130 dB
... regulations. ES300 consists of horn unit and oscillator unit. Horn unit is generated the sound from the high performance driver unit . The surface is no plastics but the metal such as marine grade ...
Sound intensity: 143 dB
For vessels of over 200m length overall. (Sound level:over 143dB/1m) The IBUKI A200ES-B air horn is a diaphragm horn, driven by compressed air. Manual and solenoid operation are available. The ...
Sound intensity: 143 dB
For vessels of over 200m length overall. (Sound level: over 143dB/1m) The IBUKI MH700 Piston horn uses an electric motor to drive the piston, which in turn produces the sound. Electric motors are designed ...
Sound intensity: 132 dB
Unlike typical hailer horn units, the Kahlenberg KB-30A is a unique Electronic Horn/Hailing system for marine use that produces a horn signal in excess of 130 dB (1/3 Octave Band), certified ...
Kahlenberg Industries, Inc.
Sound intensity: 136 dB
... Kahlenberg S-330-ENC Heated Air Horn provides a fully IMO compliant sound signal for commercial marine applications in an economic and compact package suitable for use on vessels up to 75m (246ft). The ...
Kahlenberg Industries, Inc.
Sound intensity: 131 dB
... Kahlenberg KB-20 is an Electric Horn for marine use that produces a horn signal in excess of 130 dB (1/3 Octave Band) as required for vessels up to 75 meters in length. The KB-20 is ...
Kahlenberg Industries, Inc.
Sound intensity: 123 dB
Approved signalling whistle complete with white painted horn Ø 7.9. With electric compressor and mounting accessories. Meets COLREG 1972 IMO class IV regulations. Approvals: NMMA, LLOYDS REGISTER MCA.
Sound intensity: 143 dB
Frequency: 70 Hz
... oscillates at a certain frequency which makes the air inside the sound horn vibrate in resonance to produce a sound audible over a wide range. type: ZET-Horn 70 AC ship's length: ...
ZÖLLNER Signal GmbH
Sound intensity: 143 dB
Frequency: 110 Hz
... oscillates at a certain frequency which makes the air inside the sound horn vibrate in resonance to produce a sound audible over a wide range. type: ZET-Horn 110 AC ship's length: ...
ZÖLLNER Signal GmbH
Sound intensity: 143 dB
Frequency: 90 Hz
... provided. A thermostat controlled anticondensation heating keeps the sound horn and the operating valve free from condensed water and thus from ice. type: MAKROFON ZM 200/90b ZVE(E)H ship's length: ...
ZÖLLNER Signal GmbH
Sound intensity: 143 dB
... behind the regulations determined through the 'International Convention for Preventing Collisions at Sea, 1972'. Nowadays, each vessel from 12 metres and more (length over all) must be equipped with sound signal appliances ...
Kockum Sonics
Sound intensity: 132, 122 dB
The DHR300 Air Horns are high quality maritime signalling horns for seagoing and inland navigation vessels. Made of high quality materials like stainless steel and brass. Application Inland navigation ...
Den Haan Rotterdam
VOLTAGE SOUND LEVEL ABSORBED OWER FREQUENCY Volt at 2m distance Watt +/-10% Hertz +/-5% H M L 12 ...
Fisa Italia srl
Sound intensity: 123 dB
... low air requirement for dependability and long life. Mounting pad and hardware included. Designed for use with choice of air horn kits. See specifications below. Aftermarket units are shipped in attractive packaging with FIAMM name
Fiamm Spa
... / 1 m Installation by means of angle mounting AC and DC versions Signal horn Series 8491/1 with trumpet and connection cable Signal horn Series 8491/2 compact design ...
R. STAHL Schaltgeräte
Sound intensity: 143 dB
Piston horn is electrically driven, and employs a motor to drive reciprocating piston mechanism to produce a powerful tone. The motor is only operated on blowing for low power consumption. MH700H is just required electrical ...
Sound intensity: 122, 132 dB
The DHR300 Air Horns are high quality maritime signalling horns for seagoing and inland navigation vessels. Made of high quality materials like stainless steel and brass. Single or three tone Chromium ...
A ships horn is a device designed to emit acoustic signals.
ApplicationsIn reduced visibility, the horn may be sounded while underway, at anchor or during maneuvers. In normal visibility, it is used to signal the ship's intentions such as changing course to port or starboard or moving astern.
TechnologiesDepending on the vessel's dimensions, its horn operates somewhere between 70 and 700 Hz, with a range of one to two miles. Ships horns usually operate on either compressed air or electricity.
How to chooseVessel length will determine choice of horn and its frequency. Technical details can be found in Appendix III of the RIPA.
- Acoustic communication
- Limited range
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