So, I have not been on board, as you probably assume. Why not. Ahm. The wrong a/c type, in my eyes... ...

Seriously, that was a charter flight operated by Lufthansa for the Alfred Wegener Institute for research on continent Antartica, Bremerhaven. The Stern magazine, Hamburg said,
13,700 km nonstop.
Now it's up to me to translate that into decent aviation English, isn't it. Ok, why not.
13,700 km nonstop, or 7398 nautical miles nonstop, on board a LH-A359 . That's not bad, compared to the LH-B744 .
The LH-A359 has at least 293 seats, or, dependant on the registration even 319 seats. So, I assume that the LH-A359 to Port Stanley was not packed (dt.: voll besetzt) .
But even with five or...