The capsized Costa Concordia cruise ship which ran aground off the west coast of Italy. (GIAMPIERO SPOSITO/REUTERS)

Discovery’s Costa Concordia documentary has slid past National Geographic Channel’s Concordia disaster doc. The premiere of Discovery’s “Cruise Ship Disaster: Inside the Concordia,” last Sunday averaged 1.83 million viewers.

One week earlier, the premiere of National Geographic’s “Terror at Sea: The Sinking of the Concordia” clocked 1.2 million viewers, according to numbers-crunching Nielsen.

In fairness, Discovery is available in nearly 50 million more homes than NatGeo. But the so-called coverage rating for Discovery’s documentary finished 24 percent above NatGeo’s docu. Oh, and Nat Geo’s cruise-ship disaster numbers still represent a big ratings spike for that network. (So, yes, in truth, everybody sorta wins.)

The cruise ship Costa Concordia ran aground off a Tuscan island in January, killing at least 17 people.