After Seabourn located a long-sunken WWI-era ship in Chile, I'm reminded how diving in an expedition ship's sub can unlock new worlds for cruise passengers -- and make discoveries.

During the Cold War, the Soviet Union sought an edge in undersea warfare by designing the Lira-class (Alfa) submarines with ...

The divers with Code 760, Regional Dive Locker at Puget Sound Naval Shipyard & Intermediate Maintenance Facility took ...

The viral video shows "how to dive the submarine, which is essentially flooding the ballast tanks to make the sub neutrally buoyant," Steve told Newsweek. The clip shows Steve sitting inside "Lake ...

Jerry Smith was the founder of AST Scuba in Pittsfield, and laid the foundation for the county's underwater search and rescue ...

In May 2002, the Navy research submarine USS Dolphin caught fire and partially flooded near San Diego while resurfacing to ...

The submarines were reported to be the world's fastest and deepest diving of their era and could reach a top speed of 41 knots submerged. The boats could get to top speed in just about sixty ...

The American Virginia-class submarine USS "Washington" has received the highest award granted to military units—the ...

The HMS "Trooper" likely sank after hitting an underwater German mine off the coast of an island in the Aegean Sea in 1943 ...

Select guests on Seabourn Pursuit made maritime history with the discovery of a WWI wreck during a submarine expedition.

Shipwreck hunters have located a long-lost World War II submarine which sank off the coast of Greece 81 years ago, Live ...

Those chances will come during a series of "Nook & Cranny" and "Deep Dive" tours being offered by the Wisconsin Maritime Museum, which is where the submarine is permanently docked. The tours ...