''We Didn't Mean to Go to Sea'' is the seventh book in Arthur Ransome's Swallows and Amazons series of children's books. In this book, the Swallows (Walker family) are the only recurring characters. They are staying in a new location, Pin Mill on the River Orwell upstream from the ports of Felixstowe and Harwich.
The book features a small sailing cutter, the Goblin, which is almost identical to Ransome's own boat Nancy Blackett. This book also features accurate geography unlike the Lakes books. Ransome sailed Nancy Blackett across to Flushing by the same route as part of his research for the book.
