The United States Secretary of State, Antony Blinken, has approved a possible foreign military sale of anti-submarine warfare and related equipment to India at an estimated cost of $52.8 million.

Conventionally powered subs are the "more important part of their submarine force," Clark said, particularly ones that can launch anti-ship ... When those coast guard ships encounter US Navy ...

China's coast guard found a submarine detection ... to detect subs and counter sub signals. Like the US Navy, China has its own anti-submarine warfare and maritime surveillance aircraft, such ...

A submersible vessel used for taking tourists to see the wreckage of the Titanic in the North Atlantic has gone missing, triggering a search-and-rescue operation, the US Coast Guard said on Monday.