First of all, I believe this is a propaganda method by Australian politicians to promote aukus. But 21 new nuclear sub is possible. It is 7 years From 2024 to 2030, according to the progress of the past two years and the construction capacity of Huludao, 2 SSNs each year are reasonable. Based on historical data, an SSBN every two years is not surprising. These two add up to 18. If the three 093Bs launched in the past two years are added in, it will be exactly 21…I feel quite the opposite. 21 new nuclear subs in just 6-7 years completed? Highly skeptical. But we'll see.