Notice is hereby given to all mariners and other parties concerned that:

1.Reference: Philippine Navy Radio Message Cite NOCB-0521-056 dated 14 May 2021

2.The  Philippine Navy will be celebrating its 123^rd Anniversary on 20 May 2021 and one of the activities to be conducted is the Blowing of Horns/Sirens of all Philippine Navy vessels at their respective locations at exactly 0800H on the said date.   

3. In this connection, all ships/watercrafts transiting the above-mentioned areas the said date are advised to take note of the information and take precautionary measures at all times.

4. The cooperation of all concerned in effecting widest dissemination of this information is highly requested.