The warning was issued a day after the squad of 23 Filipinos and two Russians were rescued from a Greek-flagged oil tanker that was Wednesday attacked by some projectiles off Yemen’s rebel-held Hodeida port.
The Sounion strike set off a fire and reduced motor power.
Yemen’s Iran-backed Houthi rebels claimed that they support Gaza during the Israel-Hamas conflict by staging a campaign against foreign transport.
The Philippines supplies a lot of mariners to the world’s transport sector.
The Houthis attacked the Sounion, which was the seventh ship with Filipino team members, according to Manila on Thursday.
Since the fleet was taken by the Houthi in November, one Filipino has been missing since the Red Sea assault on the MV Tutor in June, while 17 of the Galaxy Leader’s staff are still in Houthi prison.