Captain Haddock home, Marlinspike Hall (or "Moulinsart" in the original French). Harry Thompson, author of "Tintin: Hergé and his creation", writes that the introduction of this large and luxurious country house was "to provide a suitable ancestral home for Tintin and himself to move into." To achieve this in terms of the plot, Hergé also details Haddock's ancestry, something Thompson regards as distinctive: "Haddock is the only regular character whose relatives turn up in the Tintin stories at all (if one discounts Jolyon Wagg and his dreadful family)." As Haddock's role grew, Hergé expanded his character, basing him upon aspects of friends,
Tintin and the Lake of Sharks Nouchka free for the device, but, unaware of Tintin's arrival, the children escape from their cell and hijack an underwater tank. Rastapopoulos takes over control of the tank with his computer, but he then notices Captain Haddock's sub on his monitor and uses the tank to fire torpedoes at Haddock, which provokes a fight between Tintin and the other gangsters as he attempts to stop Rastapopoulos. Haddock's mini-sub is hit, jamming its propulsion, and the tank is returned to the base by remote control. While waiting for the children to return, Rastapopoulos takes Tintin to his office and shows him