Indonesia and China held joint Naval drills.

According to information published by CGTN on May 10, 2021, China and Indonesia held a joint naval exercise in waters off Jakarta to improve their coordination in emergency response at sea.
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Sampari-class missile boat KRI Halasan, Chinese Suqian guided-missile frigate and KRI Usman Harun frigate during the exercise (Picture source: Handout)

China Navy's Liuzhou and Suqian guided-missile frigates joined Indonesia's KRI Usman Harun frigate and Sampari-class missile boat KRI Halasan in the exercise, which included a communication drill, search and rescue operation and formation maneuver.

Liuzhou (573) is a Type 054A frigate of the People's Liberation Army Navy which was commissioned on 26 December 2012.

The Type 054A carries HQ-16 medium-range air defense missiles and anti-submarine missiles in a vertical launching system (VLS) system. The HQ-16 has a range of up to 50 km, with superior range and engagement, angles to the Type 054's HQ-7. The Type 054A's VLS uses a hot launch method; a shared common exhaust system is sited between the two rows of rectangular launching tubes.

The four AK-630 close-in weapon systems (CIWS) of Type 054 were replaced with two Type 730 CIWS on the Type 054A. The autonomous Type 730 provides improved reaction time against close-in threats.

KRI Halasan (630) is a Sampari-class fast attack craft of the Indonesian Navy. Built by PT PAL, she was the third ship in her class.

The vessel, part of the KCR-60m family of fast attack missile craft, has a length of 59.8 meters (196 ft) and a beam of 8.1 m. At full charge, it has a draft of 2.6 m, and the ship's displacement is 460 tonnes. It has a maximum speed of 28 knots (52 km/h), with a cruising speed of 20 knots (37 km/h). She can stay at sea for 9 days, with a range of 2,400 nautical miles (4,400 km) and a crew capacity of 43.

She is armed with the Bofors 57 mm L/70 naval artillery gun, which replaced the previous 40 mm version. Additionally, she is also equipped with two 20 mm guns and two anti-ship missile launchers.