The second title in a new quartet from Sam Usher featuring the much-loved Boy and Grandad. Boy has lost his beloved toy penguin. He and grandad have looked all over the place but she's nowhere to be seen. Boy thinks he might know where she's gone, but if they're going to find her, they need to build a big boat!In this thrilling new story, CLANG! sees Boy and Grandad use their resourcefulness to turn an old bath into a seaworthy vessel, and navigate all the way to the South Pole. Along the way, they encounter a variety of ships, submarines and even pirates. A delightful family read, exploring creativity and deftly introducing subtle science facts - all the while following the enduring and heart-warming Boy-Grandad relationship.