Seventeen Degrees Off Course

"The documentation was incorrect. Specifically incorrect in a way that would have caused a cascade failure in the Section D life support relay within fourteen months."She has been on the ship for nine days. She has already rewritten their official documentation, presented the math in front of a room full of officers, and walked into the Commander's office without a single word of apology. She is insubordinate, brilliant, and completely certain she is right.
She is also right. Commander Dae Yun has spent fifteen years becoming the Aethon. She knows the ship the way she knows her own pulse - the recyclers, the pressure differentials, the exact torque specification of a mount that no one else bothers to look up. She has made the ship perfect. She has made it perfect by giving it everything she has. What she has not done, not once in fifteen years, is let anyone see the cost.
Recruit Solène Varis annotates everything. Technical manuals, orientation briefs, the margins of her own skin when no paper is available. When she finds an error, she corrects it - with or without permission, with or without apology, because the error is there and she cannot leave an error unsolved. She arrives on the command deck like a pressure change: subtle, inescapable, and felt in the jaw before the instruments confirm it.
When a hull breach seals them both inside a damaged sector of the ship - along with a failing recycler, a rescue timeline of thirty-six to forty-eight hours, and a hidden room that should not exist - they have nowhere to go. Not from the problem. Not from each other. Not from the archive terminal they find inside the sealed room, holding sixty-seven personal logs recorded over forty-seven years by a Commander who loved someone and spent a career finding every possible way to say everything except that.
Seventeen Degrees Off Course is a slow-burn science fiction novel set aboard a generation ship three generations deep into a voyage no one on board will live to complete. It is a story about precision and the limits of precision - about the language people build for themselves when the true language feels too dangerous to use, and what it costs, finally, to choose the other one. What do you do when you have the right word but no sentence to put it in? When the ship is running well and the margin is adequate and there is always one more report before the thing you are not ready to say?