KRI Singa (651) is a FPB-57 Nav II patrol boat currently operated by the Indonesian Navy.
Singa was built by Lürrsen-Werft, fitted out by PT PAL and launched in 1988. The ship was commissioned in 1988.
On 22 April 2021, she was deployed off Bali in search for , which went missing off the waters of Bali during a torpedo drill. The navy had deployed six additional ships to the area which were , , , KRI Singa, and .
KRI Singa was shown as the ship used by the Indonesian Navy to try capturing Rocky in the film .