US

THE USMC is interested in this hybrid of a speedboat and a submarine called the HyperSub

The HyperSub is a combination of a speedboat and submarine, capable of reaching 38 mph and lasting up to 12 hours underwater on a single charge.

More from Paul Szoldra:

Business Insider Emails & Alerts

Site highlights each day to your inbox.

Follow Business Insider Australia on Facebook, Twitter, LinkedIn, and Instagram.