SEOUL—For the first time since the 1980s a U.S. nuclear-armed ballistic missile submarine (SSBN) visited South Korea on Tuesday, as the allies launched talks to coordinate their responses in the event of a nuclear war with North Korea. White House Indo-Pacific coordinator Kurt Campbell confirmed the rare visit, which had been expected after it was…

A family member of one of the passengers on board the doomed Titanic exploration submersible vehicle said that he didn’t want to go on the trip due to fears for his safety. Azmeh Dawood said her nephew, 19-year-old Suleman Dawood, told a relative that he “wasn’t very up for it” but went anyway to make his father, Shazada…

The crew of five men aboard a missing submersible vessel on an expedition to explore the Titanic wreckage is projected to exhaust their oxygen supply by 7 a.m. EDT Thursday morning, according to U.S. Coast Guard projections. The vessel, named Titan and measuring 21 feet in length, vanished in the waters of Newfoundland on Sunday morning…

The crew of five men aboard a missing submersible vessel on an expedition to explore the Titanic wreckage is projected to exhaust their oxygen supply by 7 a.m. EDT Thursday morning, according to U.S. Coast Guard projections. The vessel, named Titan and measuring 21 feet in length, vanished in the waters of Newfoundland on Sunday morning…

A whistleblower from the company whose submersible went missing during an undersea expedition to the Titanic had raised safety concerns ahead of the craft’s maiden voyage and was later fired. David Lochridge once served as the director of marine operations at OceanGate, the firm whose “Titan” submersible went missing on Sunday during a deep dive…

Crews searching for the tourist submarine that went missing on June 18 while exploring the Titanic shipwreck in the Atlantic Ocean have detected “underwater noises” in the search area on June 20. The U.S. Coast Guard said on Twitter late at night that the noises were picked up by a Canadian P-3 aircraft, prompting remotely operated vehicles…

The five people onboard the tourist submarine that went missing on June 18 while exploring the Titanic shipwreck in the Atlantic Ocean are likely “very uncomfortable” and in a “dire situation,” an expert has warned. The 21-foot submersible, operated by OceanGate Expeditions, was reported missing on Sunday about 435 miles (700 kilometers) south of St. John’s, Newfoundland, after it failed…

A tourist submarine has gone missing while exploring the Titanic shipwreck in the Atlantic Ocean, the U.S. Coast Guard has confirmed. The Boston Coast Guard told BBC News that a search and rescue operation was underway for the small submersible craft, which takes tourists to view the famous shipwreck 370 miles (600 km) off the…

How Canada might go about replacing its aging submarine fleet is an ongoing exercise, but the nuclear-powered option looks to be off-the-table. This much is not new; however, Canada was also just reminded of its exclusion from the AUKUS nuclear submarine pact between its close allies the United States, United Kingdom, and Australia. It may be…

HARTFORD, Conn.—Connecticut divers have discovered the wreckage of an experimental submarine that was built in 1907 and later scuttled in Long Island Sound. The Defender, a 92-foot-long boat, was found Sunday by a team led by Richard Simon, a commercial diver from Coventry, Connecticut. Simon said he had been interested in the story of the…