RSS Steadfast (70) is the third ship of the Formidable-class stealth frigate of the Republic of Singapore Navy.

RSS Steadfast was built by ST Marine Engineering company in Singapore around the late 2000s.

[3][4] Between 27 June to 31 July 2008, RSS Steadfast participated in the exercise alongside more than 30+ warships and 10+ submarines from different countries.

[6] RSS Steadfast was leading two multi-national warship from Okinawa to Hawaii for RIMPAC 2016 which lasts from 30 June to 4 August 2016.

[7][8] On 27 May 2020, RSS Steadfast and USS Gabrielle Giffords conducted a bilateral exercise from 24 to 25 May in the South China Sea.