Correcting a correction

I am a user of shipspotting.com, where people can upload pictures of ships to the Internet. They also give news related to shipping, and it is in such a news item that automatic correction kicked in - where inappropriate. Spot the fault:

Mariners may need to brush up on their skills with the #OOPS#tant. A recent report from the GAO notes that while the Air Force is in the process of modernizing the Global Positioning System, "it is uncertain that [it] will be able to acquire new satellites in time to maintain current GPS service without interruption. If not, some military operations and some civilian users could be adversely affected."

What the heck is an #OOPS#tant?

Image courtesy brasscompass.com

Well, it's a sextant.