In James Clavell's novel "Shōgun," the phrase refers to a time measurement that is culturally significant. It symbolizes a brief period during which important decisions or actions can occur, illustrating the urgency and efficiency expected in certain situations. The captain's promise to assist quickly emphasizes the need for swiftness in the face of challenges.

The reference to "three sticks" denotes a timeframe of roughly three hours, equating each stick of incense to about one hour of time. This highlights the value of promptness and the structured approach to time in the narrative, reflecting the broader themes of discipline and immediacy prevalent throughout the story.