in fact nearly every square meter is claimed by at least two countries
Actually, based on the map (The WesWorld According To Walter), there are only two "disputed" areas in Antarctica...oddly enough, they both involve the SAE:
50°E-75°E : SAE/France
10°W-20°W: SAE/Nordmark
And of course if/when the USA puts in a claim, they'll overlap with somebody...probably Chile (90°W-120°W).
However, the Filipinos were veddy, veddy careful to stake their claim in a 100% unclaimed area. So any other claims on our turf will find themselves denied priority.
the big and plenty ships won´t build something similar as they can use their fleets to make sure no armed filipino icebreaker will ever be decisive regarding the question who holds which lands. ;o)
Who says there will just be the icebreaker? For 1929, I'm planning an Antarctic Panzerschiffe...^_^