A file image of KM Arau , which collided into a Vietnamese fishing vessel on 22 April. (MMEA)

Hanoi has issued a diplomatic note to Putrajaya after a Malaysia Maritime Enforcement Agency (MMEA) vessel collided into a Vietnamese fishing boat in disputed waters of the South China Sea, multiple sources close to the matter confirmed to Janes .

Vessels involved in the collision are the MMEA's sole Arau (Nojima)-class offshore patrol vessel (OPV) KM Arau and an unnamed fishing boat with pennant number 90729.

A Royal Australian Navy Hobart-class guided-missile destroyer fires a Harpoon surface-to-surface missile during Exercise ‘Pacific Vanguard' 2022. The class will be equipped with the Naval Strike Missile in the future. (Commonwealth of Australia)

The Australian government has released two more policy documents that outline its defence development intentions over the next few years. The two documents – National Defence Strategy (NDS) 2024 and Integrated Investment Program (IIP) 2024 – were unveiled by Australia's Minister of Defence Richard Marles on 17 April.

Sentinel , the testbed for Australia's Patrol Boat Autonomy Trial project. (Austal)

Australian shipbuilder Austal has completed the sea acceptance trials phase for the country's Patrol Boat Autonomy Trial (PBAT), the company announced on 23 April.

The milestone, which included an endurance trial, was achieved by the project's testbed – a decommissioned Armidale-class patrol boat now known as Sentinel. The vessel was formerly in service with the Royal Australian Navy as HMAS Maitland and retired in 2022.