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It looks like visits to the linked URL are blocked when the referrer isn't an MIT page. If you visit the authors' home page you can view the original article:

https://alum.mit.edu/pages/sliceofmit/author/hoagland/

EDIT: Duh. You can't click that link because it's blocked by referrer again. So just copy/paste that URL into your browser and you'll be all set. In fact, you can do the same with the original link: https://alum.mit.edu/pages/sliceofmit/2014/04/09/why-is-spee...

Even the full cached version hangs. Text-only works though.

http://webcache.googleusercontent.com/search?q=cache:bGSHA2K...

I think this is the same content, different MIT URL:

http://engineering.mit.edu/ask/why-speed-sea-measured-knots

http://archive.is/L86K7