Singapore has signed a contract for two additional Sikorsky S-70B seaborne helicopters, with the rotocraft due for delivery in 2016.
The new aircraft will have a "different weapons kit" to the Republic of Singapore Navy's existing fleet of six S-70Bs, says an industry source, who declines to provide exact details about how they will be equipped.
Singapore's existing S-70Bs, which were inaugurated into service in January 2011, are optimised for anti-submarine warfare duties, with an L-3 long-range active sonar and torpedoes.
Singapore defence ministry
According to Sikorsky's website, the S-70B can be configured for several other missions, including anti-surface warfare (ASuW), search and rescue, medical evacuation and vertical replenishment.
In the ASuW role, the type can be armed with up to eight Lockheed Martin AGM-114 Hellfire air-to-surface missiles, as well as machine guns and cannons.
Although Singapore's S-70Bs operate from the nation's six Formidable-class frigates, they are flown and maintained by air force personnel.