00:00Giant steel gates sink straight to the ocean floor to fight massive North Sea storms.
00:06Two hollow floating arms swing out across the open shipping channel when dangerous high tides arrive.
00:13Automated valves open wide, flooding those giant hollow steel arms with tons of freezing ocean water.
00:20Heavy ballast water drags the massive structures down onto the concrete seabed, locking out destructive tidal surges.
00:29Compressed air pumps push the water right back out, letting these floating arms rise up again.
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