Acting on tips from informants, soldiers in Colombia have seized a 99-foot fully submersible submarine that was intended to be used for drug smuggling.

The fiberglass boat had enough room for eight tons of drugs and a crew of six, and enough power to make the eight-or- nine-day trip from Columbia to Mexico totally underwater.

It hasn’t been uncommon for Colombian authorities to catch narco-traffickers with semi-submersible submarines, but smugglers using fully submersible subs is more unusual. It is estimated the sub cost two million dollars to build.