One of the most unusual submarines of the Cold War was named after one of the most unusual fish in the sea. Halibut are flatfish, bottom-dwelling predators that, unlike conventional fish, lie sideways ...

What You Need to Know: The USS Halibut (SSGN-587) was a revolutionary nuclear-powered guided missile submarine, commissioned in 1960. Initially designed to launch nuclear cruise missiles, Halibut ...

In the 1970s, the USSR had an undersea cable connecting a major naval base at Petropavlovsk to the Pacific Fleet headquarters at Vladivostok. The cable traversed the Sea of Okhotsk, which, at the time ...

In 1968, the ballistic missile submarine USS Scorpion vanished in the Atlantic with 99 men aboard. But in the 1970s, another nuclear sub, USS Halibut, was sent on a mission even more secret. Using ...