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The diving chamber is a Submarine that appears in Jak and Daxter: The Precursor Legacy. This Submarine is Located at the bottom of Lost Precursor City. It has to be powered by Blue Eco for it to be activated. When Jak and Daxter activate the Ship, Keria sounds surprised when they used eco to power it. Once you get inside, the Sub takes you back up to the surface of Rock Village. The Precursors most likely used it to get back and forth easily. In a way, the Precursor Sub resembles the Ship that the Precursors flew off in the end of Jak 3.
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