@KGrimB:
USA naval movement is extremely restricted on the Atlantic side to just 3 or 4 sea zones. On the Pacific map, I think, your boats can end their turn anywhere as long as they don’t share the sea zone with Japanese naval units.
No, sorry:
@rulebook:
In addition to the normal restrictions (see
“Powers Not at War with One Another,” page 14), while it’s not at war with Japan, the United States may not move any units
into or through China or end the movement of its sea units in sea zones that are adjacent to Japan-controlled territories. While
not at war with Germany or Italy, the United States may end the movement of its sea units on the Europe map only in sea
zones that are adjacent to U.S. territories, with one exception: U.S. warships (not transports) may also conduct long-range
patrols into sea zone 102.
@KGrimB:
So in that case, you would be able to have your Philippines fleet merge with an Anzac fleet.
As simon33 correctly said, they simply share a seazone, not being allowed to defend together.