The World Navy is one of several organizations that makes up the World Security Patrol.
Their primary function is the defense of the oceans and any vessels within it. They function similarly to the WASPs, but while the WASPs are mainly a peacekeeping force and had much more direct dealings with the undersea races. The Navy's role focuses more on active defense.
There is a large rivalry between both the WASPs and the Navy, as both serve similar functions.