The BRP General Mariano Alvarez (PS-38) is the lone ship of the same class of coastal patrol ships in service with the Philippine Navy. Historically, she is the lead ship of the Cyclone class (a class of US Navy patrol ships) prior to being transferred to the Philippine Navy, thereby making it the only navy other than the US Navy to operate a Cyclone-class ship. Today she is considered as one of the newest active fighting ships in the Philippine Navy.