Lieutenant Fury

When "Renard" is returning to England how does Midshipman Francis see Eddystone Lighthouse on the point of the Isle Of Wight when Eddystone Lighthouse is located SSW Plymouth Breakwater 11 Nautical Miles, which is approximately 110 nautical miles east from the westernmost point of the Isle of Wight. The Needles Lighthouse (which did not exist) and St Catherines Point Lighthouse (which was not working at that time) on the Isle of Wight What Light did the Midshipman see. (Interesting)?

You aren't the first to notice this, but well-spotted!
http://www.historicnavalfiction.net/t15-g-s-beard-discussion#2222