The US Navy delayed the launch of the new generation submarine SSN[X] from 2035 to 2040 due to budgetary pressures. The vessel is designed to counter Chinese and Russian threats by combining the advantages of the Seawolf, Virginia and Columbia classes. However, the high cost of up to $8 billion per unit and the impact on the shipbuilding industry are major challenges. The delay raises concerns over the US’ ability to maintain undersea dominance.