If the gp meant that, then the US would have a 4 ocean navy. I'm not arguing the size is the biggest, I'm arguing that the reason it is the biggest is not due to coastlines on two oceans.
And the US does have a multi-ocean Navy, divided up into 6 fleets that are assigned to certain oceans/seas. And its size is clearly due to the role it's been assigned by the US government. In fact, reasonable arguments can be made that the USN is too small for what it's been tasked with.
