The “bot” had penetrated to F Deck, paying out a thin ... penetrate the rusted ruin of Titanic’s first-class promenade, once as inviting as a similar deck on the Olympic (right).

“It’s honestly the coolest thing I’ve ever done in my life,” Coman said. The model is an exact-scale replica of the largest piece of the Titanic ever recovered. “The Big Piece,” as it is known, is a ...