AT 150/130 air whistle, suitable for vessels with a LOA 75m till 200m.

Regulations Before and After COLREG 1972

Before “COLREG 1972” (International Regulations for Preventing Collisions at Sea), low-pitched tones were often used for smaller vessels. However, the principle of reserving low tones for large vessels was not strictly enforced. The IMO regulations now reserve very low tones exclusively for the largest ships. For middle-sized and smaller vessels, there are broader frequency options available.

Signal Preferences and Frequency Range

IMO regulations prioritize signals that maintain audibility even at a distance. Vessels between 75 and 200 meters (246 – 656 feet) should use whistles with frequencies ranging between 130 and 350 Hz. These frequencies ensure effective communication and compliance with maritime safety standards.

Installation Instructions for AT 150/130

Mounting the AT 150/130

Secure the AT 150/130 whistle with four M16 bolts to an outrigger or similar construction. Ensure the structure is stable to prevent any operational issues.

Cleaning the Supply Pipe
Before connecting the supply pipe to the whistle, blow the pipe thoroughly clean. This step is crucial to avoid any functional troubles caused by debris or contaminants in the pipe.

Installing a Primary Filter
If the pipeline above deck exceeds 100 meters (328 feet), install a primary FILTER TP 15/2 at the base of the mast. This filter protects the whistle from water condensate and rust particles, ensuring reliable operation.

Maintaining the Filter
Regular maintenance is essential for ensuring optimal performance. To begin with, it is recommended to drain the filter approximately once a month. By doing so, you can effectively prevent blockages while also maintaining the integrity of the signaling system.

Valve Unit Specifications

The VALVE UNIT TV 784 is designed for efficient air flow, featuring thermostatic heating, exchangeable choke flanges, and filters. It includes two coils for normal and emergency operation, as well as a lanyard, providing reliable functionality.

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Technical Data

• Frequency: 130 Hz
• Sound Pressure Level (1m):
  Total: 148 dB
  1/3 octave IMO limit: 138 dB
• Air consumption: 35 – 45 I/s
• Air supply pressure with choke regulation:
  0,6 – 3 MPa (6 – 30 bar)
• Electric power:
  Thermostat heating: 24 W
  Valve: 27 W
• Weight: 65 kg
• For wiring diagram: see Valve Unit TV 784.

AT 150/165 air whistle, suitable for vessels with a LOA 75m till 200m.

Regulations Before and After COLREG 1972

Before “COLREG 1972” (International Regulations for Preventing Collisions at Sea), low-pitched tones were often used for smaller vessels. However, the principle of reserving low tones for large vessels was not strictly enforced. The IMO regulations now reserve very low tones exclusively for the largest ships. For middle-sized and smaller vessels, there are broader frequency options available.

AT 150/165

Signal Preferences and Frequency Range

IMO regulations prioritize signals that maintain audibility even at a distance. Vessels between 75 and 200 meters (246 – 656 feet) should use whistles with frequencies ranging between 130 and 350 Hz. These frequencies ensure effective communication and compliance with maritime safety standards.

Installation Instructions for AT 150/165

Mounting the AT 150/165

Secure the AT 150/165 whistle with four M10 bolts to an outrigger or similar construction. Ensure the structure is stable to prevent any operational issues.

Cleaning the Supply Pipe
Before connecting the supply pipe to the whistle, blow the pipe thoroughly clean. This step is crucial to avoid any functional troubles caused by debris or contaminants in the pipe.

Installing a Primary Filter
If the pipeline above deck exceeds 100 meters (328 feet), install a primary FILTER TP 15/2 at the base of the mast. This filter protects the whistle from water condensate and rust particles, ensuring reliable operation.

Maintaining the Filter
Regular maintenance is essential for optimal performance. Drain the filter approximately once a month to prevent blockages and maintain the integrity of the signaling system.

Valve Unit Specifications

The VALVE UNIT TV 784 is designed for efficient air flow, featuring thermostatic heating, exchangeable choke flanges, and filters. It includes two coils for normal and emergency operation, as well as a lanyard, providing reliable functionality.

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Technical Data

• Frequency: 165 Hz
• Sound Pressure Level (1m):
  Total: 148 dB
  1/3 octave IMO limit: 138 dB
• Air consumption: 25 – 35 I/s
• Air supply pressure with choke regulation:
  0,6 – 3 MPa (6 – 30 bar)
• Electric power:
  Thermostat heating: 24 W
  Valve: 8-15 W
• Weight: 14 kg
• For wiring diagram: see Valve Unit TV 784.

AT 150/200 air whistle, suitable for vessels with a LOA 75m till 200m.

Regulations Before and After COLREG 1972

Before “COLREG 1972” (International Regulations for Preventing Collisions at Sea), low-pitched tones were often used for smaller vessels. However, the principle of reserving low tones for large vessels was not strictly enforced. The IMO regulations now reserve very low tones exclusively for the largest ships. For middle-sized and smaller vessels, there are broader frequency options available.

Signal Preferences and Frequency Range

IMO regulations prioritize signals that maintain audibility even at a distance. Vessels between 75 and 200 meters (246 – 656 feet) should use whistles with frequencies ranging between 130 and 350 Hz. These frequencies ensure effective communication and compliance with maritime safety standards.

Installation Instructions for AT 150/200

Mounting the AT 150/200

Secure the AT 150/200 whistle with four M10 bolts to an outrigger or similar construction. Ensure the structure is stable to prevent any operational issues.

Cleaning the Supply Pipe
Before connecting the supply pipe to the whistle, blow the pipe thoroughly clean. This step is crucial to avoid any functional troubles caused by debris or contaminants in the pipe.

Installing a Primary Filter
If the pipeline above deck exceeds 100 meters (328 feet), install a primary FILTER TP 15/2 at the base of the mast. This filter protects the whistle from water condensate and rust particles, ensuring reliable operation.

Maintaining the Filter
Regular maintenance is essential for optimal performance. Drain the filter approximately once a month to prevent blockages and maintain the integrity of the signaling system.

Valve Unit Specifications

The VALVE UNIT TV 784 is designed for efficient air flow, featuring thermostatic heating, exchangeable choke flanges, and filters. It includes two coils for normal and emergency operation, as well as a lanyard, providing reliable functionality.

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Technical Data

• Frequency: 200 Hz
• Sound Pressure Level (1m):
  Total: 148 dB
  1/3 octave IMO limit: 138 dB
• Air consumption: 20 – 30 I/s
• Air supply pressure with choke regulation:
  0,6 – 3 MPa (6 – 30 bar)
• Electric power:
  Thermostat heating: 24 W
  Valve: 27 W
• Weight: 12,5 kg
• For wiring diagram: see Valve Unit TV 784

AT 150/330 air whistle, suitable for vessels with a LOA 75m till 200m

Regulations Before and After COLREG 1972

Before “COLREG 1972” (International Regulations for Preventing Collisions at Sea), low-pitched tones were often used for smaller vessels. However, the principle of reserving low tones for large vessels was not strictly enforced. The IMO regulations now reserve very low tones exclusively for the largest ships. For middle-sized and smaller vessels, there are broader frequency options available.

Signal Preferences and Frequency Range

IMO regulations prioritize signals that maintain audibility even at a distance. Vessels between 75 and 200 meters (246 – 656 feet) should use whistles with frequencies ranging between 130 and 350 Hz. These frequencies ensure effective communication and compliance with maritime safety standards.

Installation Instructions for AT 150/330

Mounting the AT 150/330

Secure the AT 150/330 whistle with four M10 bolts to an outrigger or similar construction. Ensure the structure is stable to prevent any operational issues.

Cleaning the Supply Pipe
Before connecting the supply pipe to the whistle, blow the pipe thoroughly clean. This step is crucial to avoid any functional troubles caused by debris or contaminants in the pipe.

Installing a Primary Filter
If the pipeline above deck exceeds 100 meters (328 feet), install a primary FILTER TP 15/2 at the base of the mast. This filter protects the whistle from water condensate and rust particles, ensuring reliable operation.

Maintaining the Filter
Regular maintenance is essential for optimal performance. Drain the filter approximately once a month to prevent blockages and maintain the integrity of the signaling system.

Valve Unit Specifications

The VALVE UNIT TV 784 is designed for efficient air flow, featuring thermostatic heating, exchangeable choke flanges, and filters. It includes two coils for normal and emergency operation, as well as a lanyard, providing reliable functionality.

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Technical Data

• Frequency: 330 Hz
• Sound Pressure Level (1m):
  Total: 148 dB
  1/3 octave IMO limit: 138 dB
• Air consumption: 20 – 30 I/s
• Air supply pressure with choke regulation:
  0,6 – 3 MPa (6 – 30 bar)
• Electric power:
  Thermostat heating: 24 W
  Valve: 27 W
• Weight: 11,5 kg
• For wiring diagram: see Valve Unit TV 784

AT 150/330 air whistle, designed to meet regulations Zone 2 German inland waterways.

Powerful IMO-Compliant Air Horn for Inland Waters

The AT150/330 is a powerful air horn designed to meet IMO maritime regulations for inland waterways, including Zone 2 waterways and German sea arms like the Ems, Dollard, Weser, and Elbe. This air horn is required for vessels over 20 meters in length, with a sound level of 132 dB at 1 meter and a base frequency between 130 and 350 Hz. AT 150/330 zone 2
 
IMO Requirements for Zone 2 Waterways

In Germany, Zone 2 waterways require an air horn that complies with IMO regulations. Ships over 20 meters must have an air horn that delivers the specified sound level and frequency to ensure safety and proper signaling. The AT150/330 meets these stringent standards, offering reliable performance under varying conditions.
 

Easy Installation and Customization

The air horn comes with a specially designed bracket, allowing it to be easily installed and adjusted in any direction to fit different vessel setups. Brackets are available in durable aluminum and stainless steel to suit various installation environments.

Additionally, the air connection is highly customizable, providing flexibility for both the horn and the air control unit to meet specific requirements. This makes the AT150/330 adaptable to various ship systems.
 

Certified for German Regulations

To ensure compliance with German regulations for Zone 2 waterways, the AT150/330 comes fully BSH certified. Its combination of power, ease of installation, and regulatory approval makes it the ideal choice for ships navigating these areas.

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Technical Data

• Frequency: 330 Hz
• Sound Pressure Level (1m):
  Total: 148 dB
  1/3 octave IMO limit: 138 dB
• Air consumption: 20 – 30 I/s
• Standard with Solenoid Valve TV 88
• Weight: 11,5 kg
• BSH Approval

ETD 100/350 electric whistle, suitable for vessels with a LOA 20m till 75m.

A Strong Signal Without Noise

Many who navigate under the IMO Regulations (COLREG 1972) understand the importance of sound pressure levels for efficient signaling. However, the rules also state that “the sound pressure level of the vessel’s own signal at the listening posts shall not exceed 110 dBA and, as far as practicable, should not exceed 100 dBA.” This creates a challenge: how can a vessel emit a strong signal without producing excessive noise onboard?
 

Solving the Paradox

The common solution to this dilemma is placing the whistle high above deck. But what if even the highest point isn’t high enough? The answer lies in a whistle with unsymmetrical sound distribution. This innovative design offers several benefits:

• Focused Sound Radiation: The total sound is directed towards the horizontal plane, reducing downward (and upward) noise by up to 10 dBA.
• Even Sound Distribution: The sound spreads appropriately in all horizontal directions, ensuring compliance with the headline sound pressure levels prescribed by IMO.
• Optimized Sound Spectrum: This specially designed sound spectrum ensures high electro-acoustic efficiency and rich “tone color,” making the signal more perceptible in noisy environments.
• Durable Design: The horn uses twin-unit electrodynamic drivers protected by non-metallic, glass-fiber reinforced polyester, ensuring durability and long-term performance.

These advancements come together in the TYFON ETD 100/350, a new horn with a vertically extended front that tackles the issue of excessive onboard noise.
 
Additionally, when a “combined system” of two whistles, as described by the IMO, is employed, an even more effective and significant tone spectrum is produced. An air-driven TYFON for 260 or 440 Hz adds further reliability and top-notch performance.

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Technical data

• Frequency (basic): 350 Hz
• Sound Pressure Level (1m) Total: 132 dB
• 1/3 octave (IMO limit 130dB): 131 dB
• Power consumption (signal): 250 W
• Power consumption (standby) 5 W
• Heating element: 25 W
• Power source (nominal): 24V DC
  Min: 20V DC. Max: 27V DC
• Operating ambient temp. (MTK 250): 0… + 50° C
• Protection class: IP64
• Weight (ETD 100/350): 8 kg
• Weight (MTK 250): 3.1 kg

KTV 75/400 Air whistle,  suitable for vessels with a LOA up to 20m.

General Information

The KTV 75/400 signaling apparatus is lightweight, durable, and powerful, making it ideal for (Inland) ships. The KT 75/400 can be used for various applications, including, industrial settings, military use, and heavy vehicles. It is made from high-impact, vibration-resistant plastic resin, with some parts reinforced by glass fiber for extra strength. The design is entirely maintenance-free, and the diaphragm never wears out, ensuring long-lasting reliability.
 

Mounting and Installation

The valve comes equipped with a filter and complete fittings for both plastic tubing on the outlet side and copper piping (O.D. 8mm or 0.3”) on the inlet side. For optimal performance, avoid outdoor placement unless protected by a cover. Additionally, the short connection between the valve and the signal apparatus should be made from flexible material, such as rubber hose or plastic tubing, for improved durability.
 
For distinct code signals, keep the pipeline between the whistle and the valve under 6 meters. If placed outdoors, always protect the valve with a cover to prevent exposure to harsh elements. Before connecting the signal apparatus or valve, thoroughly blow the pipe line clean using compressed air to avoid any blockages.
 

Technical Data

• Frequency: Basic note of 400 Hz, enhanced by power and noise-penetrating harmonics.
• Sound Level: 136 dB(A) measured at 1 meter, equivalent to 120 dB(A) at 6 meters, and 106 dB(A) at 30 meters.

This powerful, efficient system delivers strong signaling with minimal maintenance requirements, making it a versatile solution for various operational needs.

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Technical Data

• Frequency: Basic note of 400 Hz, enhanced by power and noise-penetrating harmonics.
• Sound Level: 136 dB(A) measured at 1 meter, equivalent to 120 dB(A) at 6 meters, and 106 dB(A) at 30 meters.
• Supply compressed air:
  • Working pressure: 0,2 – 0,5 MPa* (2 – 5 bar)* or (29 – 72.5 psi)*
  • Air consumption: 5 Nl/sec free air (0.18 cf/sec)
• Weight: 0,34 kg (0.7 lbs) for the whistle alone.
• Whistle Dimensions:
  • Length Overall: 375 mm
  • Horn Diameter: 125 mm
  • Height (Whistle Only): 110 mm
• Additional Specifications
  • Inlet Hole (KT 75/400): BSP 1/8
  • TV 88 Copper Pipe: OD 8 mm

MKT 150/110 air whistle, suitable for vessels with a LOA > 200m

Regulations Before and After COLREG 1972

Before “COLREG 1972” (International Regulations for Preventing Collisions at Sea), low-pitched tones were often used for smaller vessels. However, the principle of reserving low tones for large vessels was not strictly enforced. The IMO regulations now reserve very low tones exclusively for the largest ships. For middle-sized and smaller vessels, there are broader frequency options available.

Signal Preferences and Frequency Range

IMO regulations prioritize signals that maintain audibility even at a distance. Vessels over 200 meters (656 feet) should use whistles with frequencies of 130 Hz or lower. These frequencies ensure effective communication and compliance with maritime safety standards.

Installation Instructions for MKT 150/110

Mounting the MKT 150/110

Secure the MKT 150/110 whistle with four M12 bolts to an outrigger or similar construction. Ensure the structure is stable to prevent any operational issues.

Cleaning the Supply Pipe
Before connecting the supply pipe to the whistle, blow the pipe thoroughly clean. This step is crucial to avoid any functional troubles caused by debris or contaminants in the pipe.

Installing a Primary Filter
If the pipeline above deck exceeds 100 meters (328 feet), install a primary FILTER TP 15/2 at the base of the mast. This filter protects the whistle from water condensate and rust particles, ensuring reliable operation.

Maintaining the Filter
Regular maintenance is essential for ensuring optimal performance. To begin with, it is recommended to drain the filter approximately once a month. By doing so, you can effectively prevent blockages while also maintaining the integrity of the signaling system.

Valve Unit Specifications

The VALVE UNIT TV 784 is designed for efficient air flow, featuring thermostatic heating, exchangeable choke flanges, and filters. It includes two coils for normal and emergency operation, as well as a lanyard, providing reliable functionality.

Contact Us for More Information

If you have any questions or require spare parts for your Kockum Sonics system.

Contact us.

Technical Data

• Frequency: 110 Hz
• Sound Pressure Level (1m):
  Total: 149 dB
  1/3 octave IMO limit: 143 dB
• Air consumption: 60-70 I/s
• Air supply pressure: 0,6—3 MPa (6—30 bar)
  Please state the working pressure when order.
• Electric power:
  Thermostat heating: 24 W
  Valve: 27 W
• Weight: 52 kg
• For wiring diagram: see Valve Unit TV 784

MKT 150/90 air whistle, suitable for vessels with a LOA > 200m

Regulations Before and After COLREG 1972

Before “COLREG 1972” (International Regulations for Preventing Collisions at Sea), low-pitched tones were often used for smaller vessels. However, the principle of reserving low tones for large vessels was not strictly enforced. The IMO regulations now reserve very low tones exclusively for the largest ships. For middle-sized and smaller vessels, there are broader frequency options available.

Signal Preferences and Frequency Range

IMO regulations prioritize signals that maintain audibility even at a distance. Vessels over 200 meters (656 feet) should use whistles with frequencies of 130 Hz or lower. These frequencies ensure effective communication and compliance with maritime safety standards.

Installation Instructions for MKT 150/90

Mounting the MKT 150/90

Secure the MKT 150/90 whistle with four M12 bolts to an outrigger or similar construction. Ensure the structure is stable to prevent any operational issues.

Cleaning the Supply Pipe
Before connecting the supply pipe to the whistle, blow the pipe thoroughly clean. This step is crucial to avoid any functional troubles caused by debris or contaminants in the pipe.

Installing a Primary Filter
If the pipeline above deck exceeds 100 meters (328 feet), install a primary FILTER TP 15/2 at the base of the mast. This filter protects the whistle from water condensate and rust particles, ensuring reliable operation.

Maintaining the Filter
Regular maintenance is essential for ensuring optimal performance. To begin with, it is recommended to drain the filter approximately once a month. By doing so, you can effectively prevent blockages while also maintaining the integrity of the signaling system.

Valve Unit Specifications

The VALVE UNIT TV 784 is designed for efficient air flow, featuring thermostatic heating, exchangeable choke flanges, and filters. It includes two coils for normal and emergency operation, as well as a lanyard, providing reliable functionality.

Contact Us for More Information

If you have any questions or require spare parts for your Kockum Sonics system.

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Technical Data

• Frequency: 90 Hz
• Sound Pressure Level (1m):
  Total: 149 dB
  1/3 octave IMO limit: 143 dB
• Air consumption: 60-70 I/s
• Air supply pressure: 0,6—3 MPa (6—30 bar)
  Please state the working pressure when order.
• Electric power:
  Thermostat heating: 24 W
  Valve: 27 W
• Weight: 52 kg
• For wiring diagram: see Valve Unit TV 784

MKT 75/260 Air whistle, , suitable for vessels with a LOA 20m till 75m.

Regulations Before and After COLREG 1972

Before “COLREG 1972” (International Regulations for Preventing Collisions at Sea), low-pitched tones were often used for smaller vessels. However, the principle of reserving low tones for large vessels was not strictly enforced. The IMO regulations now reserve very low tones exclusively for the largest ships. For middle-sized and smaller vessels, there are broader frequency options available.

Signal Preferences and Frequency Range

IMO regulations prioritize signals that maintain audibility even at a distance. Vessels between 20 and 75 meters (66 – 246 feet) should use whistles with frequencies ranging between 250 and 700 Hz. These frequencies ensure effective communication and compliance with maritime safety standards.

Optimal Whistle Positioning for Clear Sound Propagation

Proper whistle positioning is essential for ensuring clear, unobstructed sound radiation. Large deck surfaces can disrupt sound waves, similar to how light waves experience optical refraction. This disruption can diminish the effectiveness of the whistle. To prevent such issues, it’s crucial to place the whistle where no obstacles interfere with sound propagation.
 

Meeting IMO Regulations for Safety

The International Maritime Organization (IMO) emphasizes the importance of selecting an appropriate whistle position on board. Not only does this ensure efficient signaling, but it also guarantees that the permissible sound levels at the listening post are maintained. Excessive noise at this post can be a safety concern, so careful placement is key.
 
For the best results, a combined whistle system should be used, featuring a frequency difference of at least 10 Hz between the two whistles. This setup complies with IMO safety regulations and enhances sound distribution across the vessel. Proper installation ensures both strong signaling and adherence to safety standards, protecting crew members from high noise levels while ensuring effective communication at sea.

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Technical Data

• Frequency: 260 Hz
• Sound Pressure Level (1m):
  • Total: 143 dB
  • 1/3 octave IMO limit: 130 dB
• Air consumption: 8 – 10 I/s
• Air supply pressure: 0,3 – 0,45 MPa (3 – 4,5 bar)
• Weight: 2,85 kg

MKT 75/350 Air whistle, , suitable for vessels with a LOA 20m till 75m.

Regulations Before and After COLREG 1972

Before “COLREG 1972” (International Regulations for Preventing Collisions at Sea), low-pitched tones were often used for smaller vessels. However, the principle of reserving low tones for large vessels was not strictly enforced. The IMO regulations now reserve very low tones exclusively for the largest ships. For middle-sized and smaller vessels, there are broader frequency options available.

Signal Preferences and Frequency Range

IMO regulations prioritize signals that maintain audibility even at a distance. Vessels between 20 and 75 meters (66 – 246 feet) should use whistles with frequencies ranging between 250 and 700 Hz. These frequencies ensure effective communication and compliance with maritime safety standards.

Optimal Whistle Positioning for Clear Sound Propagation

Proper whistle positioning of MKT 75/350 is essential for ensuring clear, unobstructed sound radiation. Large deck surfaces can disrupt sound waves, similar to how light waves experience optical refraction. This disruption can diminish the effectiveness of the whistle. To prevent such issues, it’s crucial to place the whistle where no obstacles interfere with sound propagation.
 

Meeting IMO Regulations for Safety

The International Maritime Organization (IMO) emphasizes the importance of selecting an appropriate whistle position on board. Not only does this ensure efficient signaling, but it also guarantees that the permissible sound levels at the listening post are maintained. Excessive noise at this post can be a safety concern, so careful placement is key.
 
For the best results, a combined whistle system should be used, featuring a frequency difference of at least 10 Hz between the two whistles. This setup complies with IMO safety regulations and enhances sound distribution across the vessel. Proper installation ensures both strong signaling and adherence to safety standards, protecting crew members from high noise levels while ensuring effective communication at sea.

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Technical Data

• Frequency: 350 Hz
• Sound Pressure Level (1m):
  • Total: 143 dB
  • 1/3 octave IMO limit: 130 dB
• Air consumption: 8 – 10 I/s
• Air supply pressure: 0,3 – 0,45 MPa (3 – 4,5 bar)
• Weight: 1,95 kg

MKT 75/440 Air whistle, suitable for vessels with a LOA 20m till 75m. Approved for inland vessel.

Regulations Before and After COLREG 1972

Before “COLREG 1972” (International Regulations for Preventing Collisions at Sea), low-pitched tones were often used for smaller vessels. However, the principle of reserving low tones for large vessels was not strictly enforced. The IMO regulations now reserve very low tones exclusively for the largest ships. For middle-sized and smaller vessels, there are broader frequency options available.

Signal Preferences and Frequency Range

IMO regulations prioritize signals that maintain audibility even at a distance. Vessels between 20 and 75 meters (66 – 246 feet) should use whistles with frequencies ranging between 250 and 700 Hz. These frequencies ensure effective communication and compliance with maritime safety standards.

Optimal Whistle Positioning for Clear Sound Propagation

Proper whistle MKT 75/440 positioning is essential for ensuring clear, unobstructed sound radiation. Large deck surfaces can disrupt sound waves, similar to how light waves experience optical refraction. This disruption can diminish the effectiveness of the whistle. To prevent such issues, it’s crucial to place the whistle where no obstacles interfere with sound propagation.
 

Meeting IMO Regulations for Safety

The International Maritime Organization (IMO) emphasizes the importance of selecting an appropriate whistle position on board. Not only does this ensure efficient signaling, but it also guarantees that the permissible sound levels at the listening post are maintained. Excessive noise at this post can be a safety concern, so careful placement is key.
 
For the best results, a combined whistle system should be used, featuring a frequency difference of at least 10 Hz between the two whistles. This setup complies with IMO safety regulations and enhances sound distribution across the vessel. Proper installation ensures both strong signaling and adherence to safety standards, protecting crew members from high noise levels while ensuring effective communication at sea.

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Technical Data

• Frequency: 440 Hz
• Sound Pressure Level (1m):
  • Total: 143 dB
  • 1/3 octave IMO limit: 130 dB
• Air consumption: 8 – 10 I/s
• Air supply pressure: 0,3 – 0,45 MPa (3 – 4,5 bar)
• Weight: 1,85 kg

MLT 75/345 Air whistle, suitable for vessels up to LOA 20m. Approved for inland vessel.

Compact and Efficient Signaling Whistle

The TYFON® MLT 75/345 ND is designed for vessels up to 20 meters in length, meeting IMO requirements for signaling equipment. It achieves a sound pressure level of 120 dB within one 1/3 octave, ensuring compliance with international maritime standards. The system offers practical features tailored for effective and reliable performance on board.
 

Key Features for Optimal Performance

• Electrically driven compressor: Eliminates the need for pressurized air on board.
• Thermostatic heating: Ensures consistent operation even in colder conditions.
• Low power consumption: Designed to deliver high sound output with minimal energy usage.
• Easy installation: Simplifies the setup process, saving time and effort for ship crews.

Installation and Electrical Setup

For optimal sound distribution, mount the whistle as high and free of obstructions as possible. This positioning ensures all-around sound radiation, which is crucial for effective signaling. Additionally, the compressor is housed in a protective box with a built-in heating unit, ensuring reliable operation in all weather conditions.
 
When connecting the compressor, wire it to the power relay, which is controlled by a push-button switch. Be sure to check the polarity of the compressor during installation. For a 24 V system, use a cable section of at least 2.5 mm² and protect the circuit with a 16 A slow-blow fuse for safety and performance.
 
With its durable design, ease of installation, and energy efficiency, the TYFON® MLT 75/345 ND is an ideal choice for small vessels, offering robust performance while fully complying with IMO regulations.
 

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Technical Data

• Power supply: 24V DC
• Power consumption compressor: 195 W
• Power consumption heating: 25 W
• Sound frequency 345 Hz
• Sound Pressure Level at 1 m:
  • Total 126 dB
  • 1/3 octave 122 dB
• Weight 4,4 kg

MT 150/130 electrically driven piston whistle, suitable for vessels with a LOA 75m till 200m.

General Information

The ELECTRO–TYFON® MT 150/130 is an electrically driven piston ship’s whistle. It features minimal moving parts, a “swinging piston,” a cylinder that requires no lubrication, and an oil-free gearbox.

Key Features

• Unsymmetrical Sound Distribution: The design ensures the sound is distributed unevenly for efficient signaling.
• Adaptability: It operates effectively in all temperatures without additional measures.
• Stability: The whistle remains unaffected by voltage and frequency fluctuations.
• Maintenance-Free: The whistle is oil-free, non-corrosive, and requires no maintenance.
• Easy Installation: Simplified installation process.
• Compliance: Fully complies with International Regulations IMO 1972.

All-Temperature Operation

The ELECTRO–TYFON® MT 150/130 delivers high performance in both arctic and tropical climates. Its patented system, featuring a high-efficiency rectangular horn and a specially designed motor, automatically adjusts the motor speed to match the horn’s acoustic resonance, regardless of ambient temperature. This ensures the whistle remains unaffected by onboard voltage and frequency fluctuations.

Unsymmetrical Sound Distribution

IMO Regulations demand a high Sound Pressure Level for effective signaling, but the sound level at the vessel’s listening posts should not exceed 110 dBA. To solve this, the whistle is typically placed high above the deck. However, if the highest point is insufficient, doubling the distance between the listening post and the whistle can reduce noise by 6 dB.

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Technical Data:

• Sound frequency (basic): 130 Hz
• Sound Pressure Level acc to IMO (1/3 oct band): >138 dB/1m
• Sound Level A-weighted: 142 dBA/1m
• Electrical protection class: IP 56
• Colors:
  Body Galvanized nat.
  Motor Grey RAL 7030
  Horn White RAL 9003
• Weight (approx.): 68 kg

COMMON SPARE PARTS AVAILABLE FROM STOCK:

Send your inquiry to info@venteville.com

ELECTRO–TYFON® MT 150/140 is an electrically driven piston ship’s whistle. It is built up of comparatively few moving parts as the “swinging piston”, no lubricated cylinder and an oil free gearbox.

• Electrically driven (Power source)
• 140Hz  (Fundamental frequency)