a) Explain the concept of a celestial sphere. b) With reference to the celestial sphere, explain how a Meridian passage and a Marc St Hilaire observation could be used to determine a vessel’s position at sea.
Sample Solution
a) Explain the concept of a celestial sphere. b) With reference to the celestial sphere, explain how a Meridian passage and a Marc St Hilaire observation could be used to determine a vessel’s position at sea.
Sample Solution