South Korean defence company Hanwha Systems will incorporate a hull-mounted sonar (HMS) system on each of the Philippine Navy's Del Pilar (Hamilton and Hero) class as part of a contract to upgrade the ships.
The PHP1.5 billion (USD28 million) contract, which was signed in late August, also includes works to install a new integrated combat management system (CMS) and radar electronic support measures (ESM) across all three ships in the class.
The Philippine Navy's Del Pilar-class frigates were formerly in service with the US Coast Guard and transferred to the Philippines as part of an assistance package. They were recommissioned into the Philippine Navy's offshore combat force between 2011 and 2016.
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