Johan Anderson <<wefly>>
writes:

While its lockdown for most pilots we have time to explore online
flying a bit. We found this sea breeze convergence line (Sat 11 April 2020).
This the longest one I have ever seen. Straight line 7-800km from Walvisbay
(Namibia) to the north past the Angola border.  Base at 10k AGL.

The only problem is that its almost entirely over unpopulated, no roads,
Namibian desert terrain! You probably would need some onboard-motor to help get
you to a recovery or retrieve road in case.

Plenty of roads here for this 700+ km sea breeze convergence line:
https://ozreport.com/24.063#5