[Problem] To provide a nautical chart display device with which it is easy to partially confirm a nautical chart. [Solution] This nautical chart display device comprises a display unit that displays a nautical chart on a screen, a touch position detection unit that detects a touched position on the screen, an auxiliary tool determination unit that determines whether or not an observation auxiliary tool having an element to be detected that can be detected by the touch position detection unit is placed on the screen, an area specification unit that specifies a corresponding area corresponding to the observation auxiliary tool in the nautical chart on the basis of the position of the element to be detected of the observation auxiliary tool placed on the screen, and an operation-receiving unit that receives operations relating to the corresponding area in the nautical chart.
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