Crew electrical outlets became common in 1970s ship designs

When did electrical receptacles for crew use become commonplace aboard warships?

They became more common in ships designed around the 1970s.

A story about electrically noisy razors leads into the adoption of ordinary crew receptacles at sea. The 1970s provide the broad design period in which they became more usual. This is a period marker rather than a universal class-by-class cutoff. It points to changing shipboard electrical provision and habitability.