The book "Boys on the line: the first step up, or how they earned the rank of petty officers" by the famous American writer Frank G. Patchin is an exciting adventure story about friendship, loyalty and self-improvement. The main characters are a group of young sailors who together undergo tests to rise to an even higher level in their naval service. They study military affairs, gain discipline and skills, working hard on their own shortcomings. Their friendship and mutual support help the heroes overcome any obstacles on the way to achieving their goals. Courage, ingenuity and loyalty - these are the qualities that are absorbed into the character of young sailors during the struggle for each new achievement. Will the boys be able to earn the rank of Petty Officer and impress their superiors with their command of the situation? What will be their military future? These questions lead readers through a thrilling adventure filled with valor and suspense in Boys on the Line: The First Step Up, or How They Made Petty Officers.