What occurs when the observed altitude exceeds the calculated altitude in the altitude intercept method?

When the observed altitude exceeds the calculated altitude in the altitude intercept method, it indicates that the vessel is closer to the geographic position of the celestial body than previously determined. In the context of celestial navigation, the calculated altitude is based on the assumption of the vessel's position, while the observed altitude is what is actually measured.

A greater observed altitude suggests that the actual position is nearer to the celestial object than the calculated position implies. This is because a closer proximity to the star (or celestial body) results in a higher angle of elevation when viewed from the vessel. Therefore, recognizing this discrepancy means that the navigator should adjust their navigation to account for this new understanding of their location relative to the star.

Identifying an adequate course correction or taking note of the current trajectory is essential for maintaining an accurate navigation strategy. Understanding this relationship between observed and calculated altitudes is crucial for effective navigation on the seas.