What is a marine horn?
A marine horn is an essential sound signaling device on board. Marine boat horn is not used for routine broadcasts but rather for communication, warning and collision avoidance with other vessels by emitting sound signals of specific frequencies and patterns in conditions of poor visibility (such as fog, heavy rain, or darkness) or when a vessel’s intentions and actions need to be indicated.
Electric marine horn
If you’re looking for a better horn than the typical bay boat horn for motorboat-infested waters, Bozhou Marine makes excellent horns. The BZCDD electric marine horn is renowned as the loudest electric marine horn. It has an output of 300 watts and is suitable for all vessels over 20 meters in length that features a simple, rugged design, clear sound and low air consumption.


Marine air horn
If your old electric horn has repeatedly leaked water over time, you might consider replacing it with another type of marine horn – a pneumatic marine horn. Bozhou Marine produces a marine diaphragm air fog horn BZYQ.It is a warning navigation device that uses compressed air as sound power. This is designed for maritime safety within high-quality and corrosion-resistant materials and can provide the powerful and clear sound required for navigation in foggy conditions.
The solenoid valve can also be adapted based on marine air horn BZYQ and then it can be controlled by a button that makes it more convenient and flexible to use.
It also meets the requirements of the International Maritime Organization (IMO) Resolution A.1021(26), Annex I, Article 1, “Regulations on Alarms and Indicators 2009” and the “International Maritime Regulations for Preventing Collisions 1972”. Let the quality of your marine horn be more guaranteed.
Pneumatic marine horns are powered by compressed air that are the loudest and audible from great distances. They are usually used on large vessels. Electric marine horns utilize electromagnetic power and are simple to install. They are usually used on smaller vessels such as yachts and recreational boats. The type of marine horn used depends on the size of the vessel and the required sound power.
Regulations regarding marine horn
In most countries the use of marine horns is governed by international maritime law. For example the International Regulations for Preventing Collisions at Sea (COLREG) stipulate the volume of the horn, the duration of its use and the type of signal required.
In the United States, the United States Coast Guard (USCG) has established regulations requiring the use of horns by vessels operating under certain conditions. For example any vessel over 12 meters in length must be equipped with an audible signaling device.
Proper sound signals
Marine horn signals can convey some information to the outside world in various situations.
Each sound signal has a specific meaning.
One short blast : a vessel is turning left.
Two short blasts : a vessel is turning right.
Three short blasts : a vessel is reversing.
Five short blasts : a dangerous situation and require vessels to give way.
Seven short blasts are an emergency signal that prompt vessels to stop immediately.
When should a boat horn be used?
When navigating in conditions of low visibility (fog, rain, or darkness) and in crowded waters ( harbors, narrow channels or busy waterways) horn signals are necessary to alert nearby vessels of your presence and prevent collisions.
Also if your vessel is in danger or needs to warn others of potential danger, horn signals can tell others.
Without proper horn signals, vessels in these situations could collide because neither vessel is aware of the other’s intentions. Horn signals allow vessels to communicate their movements and make timely decisions to avoid accidents.
Conclusion
Understanding the role of a boat horn is necessary for anyone involved in marine activities. From commercial shipping to recreational boating, horn signals help ensure vessel safety and prevent accidents. Whether you’re an experienced sailor or a beginner, you need to make sure your boat is equipped with the right marine horn and know how to use it effectively.
