Heya there @randelia , thanks for sharing your experiences with the river raids. I'm sorry to hear you'd also lost progress after a crash, and I can understand your frustration with this.
Our team is investigating crashes during river raids. We appreciate the feedback about saving, and we've passed it on, and our team has clarified that saves are not implemented to keep the content challenging. Our recommendation is to return to the settlement when your cargo is full, or when your crew numbers are low, as this allows you to save your progression.
Let me know if there's any other thoughts or questions about this.