You haven't addressed the points I raised. Merely posessing "sea going ships" does not give you the ability to project power. The Japanese fleet is purely defensive. This is the reason it has no aircraft carriers or other significant aircraft carrying vessels at all. It doesn't have amphibious assault ships designed for moving land forces either. Finally, it doesn't have the various support vessels that are required for maintaining a force abroad.
If you are seeking to invade or hold territory 5,000 miles away, you must be able to move aircraft into the area of operations. You Must Control The Airspace! You must be able to move men, armor and equipment. You must have a support system to feed the war machine.
Japan has literally no ability to mount air attacks (fixed wing or helicopter) from any of its vessels. It doesn't have vessels designed to move ground forces, armor and equipment. It doesn't have any support structure to maintain large warships abroad.
It is a purely a defensive force.
Imagine if both Japan and France had to race to take an unoccupied island, 2,500 miles away and equidistant from each country (just pretend there is such an island for a moment). Both France and Japan must take, occupy and defend the island from the other using only conventional ordinance. Do you really have any doubt that France would either take it from the Japanese or keep the Japanese from taking it?