BRP Emilio Liwanag (PC-118) was a Tomas Batilo class fast attack craft of the Philippine Navy.

[1] It was upgraded under the Patrol Killer Medium-Republic of the Philippines (PKM-RP) Program of 2008 by Propmech Corporation; the upgrade included the reinforcement of its hull; replacing the engines, radar, navigation and communication systems; and changing the weapons fit-out to include a crane and space for rubber boats.

[4] In April 2016, in line with the Philippine Navy Standard Operating Procedures #08, the boat was reclassified as the patrol craft BRP Emilio Liwanag (PC-118), and was assigned with the Littoral Combat Force, Philippine Fleet.

[8] PC-118 and PC-114 (BRP Salvador Abcede) were the last two remaining Tomas Batilo-class patrol craft to be finally retired and struck off the Philippine Navy register during the decommission ceremony.

[9][10] The ship was originally powered by two MTU MD 16V 538 TB90 diesel engines with a total output of 6,000 horsepower.