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 Submarines Are Full of Seamen.
What's worse than being in a giant metal war ship in the middle of a navy battle? Being in a dead giant metal war ship in the middle of a navy battle. In September of 1997 that sort of thing happened. While there was no navy battle then, the resaults had to be just as horrific. Because while one of the Navy's "Smart Ships", the Aegis missile cruiser USS Yorktown, was sailing along in the middle of the ocean, the ships computers were asked to divide by zero. This caused the computers, running Windows NT, to crash - resulting in system failures and crippled ship operations.

It was dead in the water for about 2 hours and 45 minutes. Then after being towed to port, it took 2 days to fix. All because it was asked to devide by zero; a task any cheap calculator can take on (and give you a result of zero) without crashing. The entire story can be read here.

Now I remember this story from when it happened. I had a good laugh about that, and told everyone I knew since I was as big of a Mac evangelist then as I am now. So when I was reading MacMinute yesterday, I was happy to read that the Navy had purchased 260 Linux-powered Xserves for their submarines. Now this is only for "a unique sonar imaging system", and doesn't control the ships nuclear reactor or anything dire like that. But you can be sure that the "unique sonar imaging system" will kick ass, and probably not kill the entire ship if the "unique sonar imaging system" is required to divide by a cardinal number indicating the absence of any or all units under consideration. Plus it will add some much needed style to the otherwise bland nuclear submarine... even if it isn't OS X that they are running. Can't go wrong with the hardware.

August 7 2003, 5:12 PM EDT, by




Comments:
macinsider 8/7/03, 5:18 PM EDT
BAAHAHAHAHAH!

Figures. Go wintel.

ZackMac 8/8/03, 3:20 AM EDT
Wouldn't the divide by zero issue be the fault of the programmer of the application and not the OS itself?

I'm not trying to be the devil's advocate here... but back in 1997, what would the non-preemptive multitasking, protected memory OS 8 have done if it were asked to divide by zero in one of it's applications? The program could have easily crashed the entire box just like it crashed that WinNT box on that sub in 97.

-Zack

Jonathan Monahan 8/8/03, 8:51 PM EDT
Yes but with a mac they could have reinstalled the system and the apps in about 45 minutes..

Jonathan Monahan 8/8/03, 8:52 PM EDT
Or just hit the restart button and been ok :)



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