If you're not moving more that 20km, the earth is big enough that you can consider it flat. Ships move thousands of miles, you can't treat it as flat anymore.
I was trying to convey how much trouble we go through because charts are flat and the earth isn't. It's a PITA sometimes.
If you're not moving more that 20km, the earth is big enough that you can consider it flat. Ships move thousands of miles, you can't treat it as flat anymore.
I was trying to convey how much trouble we go through because charts are flat and the earth isn't. It's a PITA sometimes.