Retired Capt. Don Walsh, Ph.D., who commanded the U.S. Navy’s bathyscaphe Trieste, discusses the dive to the deepest place on Earth, the Challenger Deep located at the southern end of the Mariana ...

Plunging into the deep, dark abyss of the Pacific Ocean’s Mariana Trench, U.S. Navy Lt. Don Walsh and Swiss engineer Jacques Piccard heard a loud cracking sound in their vessel—the bathyscaphe Trieste ...

Sixty miles southeast of Guam, the Navy’s bathyscaphe Trieste (TIME, Sept. 1, 1958) settled slowly below the rolling .sea. In the small, thick-shelled crew compartment were Lieut. Donald Walsh and ...

COQUILLE, Ore. — Fifty years ago U.S. Navy Lt. Don Walsh and Swiss scientist Jacques Piccard climbed into the chamber of Bathyscaphe Trieste, a deep-sea research sub. The two men were about to make ...

Nine years before astronaut Neil Armstrong set foot on the surface of the moon, Swiss oceanographer Jacques Piccard and U.S. Navy Lieutenant Don Walsh climbed aboard the bathyscaphe Trieste for a ...