Well, I can tell you if you miss the ship, you can just die or wait around and another ship will come in. So just dont attack Septiks too much and you should be able to keep trying until you get it. I honestly didn't have a hard time jumping on to the ship, so I'm not really sure. There are probably videos of it at this point.. let me look...... and indeed there is: https://recap.us/p/57e35a4ca8003f000f685866