Dreamland route: the coastline was a hundred miles east of the map

I'm in the back of a C-130, no GPS, just a sextant and a stopwatch. I keep calling out fixes the way I used to, and the pilot keeps saying, 'Fine, but you're flying over the sea.' I look down and sure enough the coastline is a hundred miles east of where the chart says it is. The whole time I'm not scared, just embarrassed — like I got caught trusting the map instead of the ground.