My opinion:
To some degree all [most] adventure novels are predictable. Such as the protagonist usually survives.
In King Solomon's Mines, one of the greatest adventures novels ever written, you never feared for the life of Allan Quartermain because he is writing the story after the fact. However, Haggard still took you on a journey thats ending was certain, but You didn't know the events that might take place. [You had a general idea.]
The Ice Limit
At no point in this entire novel was I shocked. As soon as they mentioned the "Deadman's switch", I KNEW that the mission was going to be a failure.
You can write that on a check and take it to the bank.
As soon as the captain mentioned the story of her ancestor, I knew the ship was going to sink and I knew they would be stranded on an Ice island.
The other "twist", the Commandante pursuing the ship. 100% going to happen. Under no circumstances was that ever not going to happen. The surprise fact he was his son, dumb. Out of place. A pure Macguffin.
And the ending seed thing, not even worth bashing.

Credit:
Not badly written. The beginning is well written. You grow to like a lot of the characters. It takes a weird focus on Eli, who is a pompous arrogant, know-it-all. It seems like the author wants you to sympathize with him, but you don't. At least I didn't.
I think you generally get invested in the success of the mission. But you KNOW it isn't going to be successful, thus it kill most of your willingness to dive fully in.

I don't regret reading, but would never read it again.