The marine diaphragm air whistle horn is a warning navigation device that uses compressed air as the sound power. It can be used for large, medium and small ships entering and leaving the port, achieve navigation collision avoidance, or as the source of warning signals in case of poor visibility.
It has the characteristics of simple structure, firmness and reliability, clear pronunciation, large volume, low air consumption, etc. The electromagnetic valve can be adapted on the basis of the air horn, then can be controlled by buttons, making it more convenient and flexible in use.
It complies with the requirements of Article 1 of Appendix Ill of the International Maritime Organization (IMO) Resolution A.1021 (26)"2009 Sirens and Indicators Regulations"and 1972"International Maritime Regulations for Preventing Collisions".