Sea Change (Armstrong novel)

Sea Change is a realistic children's adventure novel by Richard Armstrong, first published by Dent in 1948 with line drawings by Michel Leszczynski and promoted as "A novel for boys". Set on a contemporary cargo ship, it features a sixteen-year-old apprentice in the British Merchant Navy who has completed one year at sea, of four years required. He is working towards his second mate's ticket, but has mixed feelings about the life.

Armstrong had served 17 years in the Merchant Service, in "tramps, steamers, liners, colliers and tankers" after World War I, beginning at the same age. He and Sea Change won the annual Carnegie Medal from the Library Association, recognising the year's best children's book by a British subject.