At about 2,000 years old, the “Ship of Theseus” puzzle still feels resonant: if every part of a ship is replaced, is it still the same ship? The modern U.S. Navy faces the reverse dilemma—what happens ...

The MarketWatch News Department was not involved in the creation of this content. Company building next-generation ships, half a football field in length, which can cross the Pacific at unmatched ...

Blue Water Autonomy, a startup that’s less than a year old, is preparing to build a hulking, 100-foot ship. Co-founded by Navy veterans and former tech executives, the company has designed the vessel ...