Maelstrom

Although this novella is ostensibly set in the Diving Universe, it contains no locations, characters or technology from that series. It's a mystery story featuring a mysterious, horrendously-destructive storm phenomenon that might be natural or technological, and the complete disappearance of a ship which fell into one such storm.

This is more of a thought experiment than a story, in that it reads like a writer doing worldbuilding setup which can then be used in a story. It's rather dry and didactic, and the characters are very much backgrounded.

So this novella may be of interest to Rusch's fans, or to readers who enjoy exploring science fiction worldbuilding, but those who are looking for a story with a more engaging plot and well-defined characters would probably do well to look elsewhere.