[crooked-v]

The bit you skipped:

> He went down to his stateroom after his conversation with Schultz, and when he returned to the bridge he said, “All right, I just sent up the latest weather. Let us clear everything off the chart table with the exception of the charts.” Schultz opened the B.V.S. program. As it happened, according to the N.T.S.B. report, because of a software glitch, the map that appeared was the very same map that had come in with the previous download, six hours earlier. The raw data on which it was based was at least 12 hours old.

It sounds like it wouldn't actually have helped if the captain had the per-hour update, because this undetailed software glitch meant the device wasn't showing the updated maps anyway.

The apparent moral of that part of the story is that the B.V.S. charts are past useless and into actively harmful territory, since they may not just be old but instead actively incorrect.

[degenerate]

Sounds like the mapping software should put a big red timestamp in the middle of the map if the current data is over 1 hour old.

It's unfortunate when programmers overlook something this big.