Three men in a boat is a novel of incidents .we are here not interested in character formation but in incidents that happen to main characters .the journey motif is clear .the structure is obviously episodic .the aim is to amuse and instruct through gentle humour and wit The three main characters -harris george and narrator in the company of dog montmorency are on boating trip in the thames in a camping skiff..severals incidents occured .. Thus the three men in boat succeeds in its purpose to be a genuine comedy .its plot is like that of a picturesque or a episodic novel.the unity of action is achieved through the fact that all events happen to the main characters