The new decade will see seismic shifts in the world of underwater warfare. I believe that several trends will converge to change the world submarine balance. Reflecting on the decade we've emerged from, we can see that the writing is already on the wall.
Although many of the key submarines have already been designed or built, it is the next 10 years when things will shift. This is largely because there was a period of slow development following the Cold War. Successive defense cuts and a focus on low-intensity land conflicts meant that submarines were under-invested in. And many submarine building programs were plagued by delays and small orders. Now finally it feels like we are on the cusp of something new.