A short story.
Captain Ravender and first mate Steadiman are bringing the Golden Mary from England to California, for the gold rush, when they run into an iceberg rounding Cape Horn. Crew and passengers make it into boats, as the ship is clearly going down, and row and drift around the South Pacific until being picked up just as they are all about to expire.
The captain and the first mate are both first rate: the captain steady and respectable, eating dinner with the lady passengers, threatening to shoot the bad seed who almost panics the escape operation, and the first mate hypercompetent, playful, serious, and taking over, seeing everyone through to the rescue even though he wishes for the benefit of the captain’s experience the whole time.