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In page Jacques Cousteau:

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On 28 June 1979, while the Calypso was on an expedition to Portugal, his second son Philippe, his preferred and designated successor and with whom he had co-produced all his films since 1969, died in a PBY Catalina flying boat crash in the Tagus River near Lisbon. Cousteau was deeply affected. He called his eldest son, the architect Jean-Michel, to his side. This collaboration lasted 14 years.[citation needed]