When Rear Admiral David Patchell, the commander of Canada’s Pacific naval fleet, looks out to sea from the docks at Canadian Forces Base Esquimalt, he sees an ocean filled with hidden perils.

In 2017, HMCS Chicoutimi undertook a dangerous and difficult assignment. For months, the Canadian submarine operated as part of an international task force enforcing sanctions against North Korea. The ...

This month, a welder at a Virginia shipyard etched the keel plate of the USS Barb, the ceremonial birthing of a new submarine. The Virginia-class fast attack submarine joins hundreds of Navy subs ...