After Rubicon (1987)

Two boys who were found sick on a boat in the sea near northern Norway, are hospitalized with mysterious symptoms. Doctor Jon Hoff can't help them, they die shortly after. He finds the same symptoms on a cat, which is the only living soul found on the tanker Rubicon that drifts in the sea. The secret service starts investigating the case, confiscates the bodies. When Hoff notices that the whole event shall be kept secret, he begins to investigate on his own. He begins to realize that his patients showed symptoms of a nuclear contamination which politicians and military want to keep from the public by all means.