The submarine will be deployed to the East Sea, also known as the Sea of Japan, the North’s official KCNA news agency said on Tuesday, without disclosing its specifications or the location of the inspection.
The crew on the KRI Nanggala 402 could have enough oxygen until early Saturday, but time was quickly running out as rescuers scoured the coast off holiday island Bali where it disappeared.
The US government in 2018 gave the green light for US manufacturers to participate in the programme, a move widely seen as helping Taiwan secure major components, though it is unclear which US companies are involved.
North Korea said on Thursday it had successfully test-fired a new submarine-launched ballistic missile (SLBM) from the sea to contain external threats and bolster self-defence,
The North Korea missile flew about 450 kilometers (280 miles) at a maximum altitude of 910 kilometers (565 miles) after liftoff from an unspecified place in the waters off the North's eastern coastal town of Wonsan.
Police describe it as the first "narcosubmarine" to be intercepted in Europe.
They were only able to determine the amount of drugs inside after they managed to refloat the vessel three days later and tow it to a nearby port. They found 152 bundles with three tonnes of cocaine, Spanish police said in a statement.
Taiwan, which China claims as its own territory, has been for years working to revamp its submarine force, some of which date back to World War Two, and is no match for China’s fleet, which includes vessels capable of launching nuclear weapons.
One ballistic missile was launched about 10:17am local time from the vicinity of Sinpo, South Korea's Joint Chiefs of Staff said, where North Korea keeps submarines as well as equipment for test firing submarine-launched ballistic missiles (SLBMs).
Under the partnership, announced by President Joe Biden, British Prime Minister Boris Johnson and Australian Prime Minister Scott Morrison, the United States and Britain will provide Australia with the technology and capability to deploy nuclear-powered submarines.