As promised, here's my CB radio story. CB radio broadcast on 27MHz. Commercial TV analog ch 2 was 54-60 MHz the second harmonic. The third harmonic, 81 MHz, was analog ch 5. CB interfered but it was far worse on ch 2. In NYC where I started, ch 2 is CBS. Here in Boston, ch 2 is PBS. So it was a bigger deal in NYC. After we moved, we discovered that if you keyed your mic in your car CB while driving past a local furniture store, the store's alarm would sound.
HMS Sheffield was hit by an Exocet missile fired by an aircraft, https://www.youtube.com/watch?v=IUZu8bvxJs4 not a torpedo from a ship. The article is correct that it was the motor that set fire to the superstructure. (That wasn't the only time an Exocet failed to explode on impact. http://www.nytimes.com/1984/06/26/world/iraqi-exocet-hit-tanker-but-failed.html )
The Forrestal incident was caused by a power surge in the aircraft that wasn't related to the ship's radar. http://secondsfromdisaster.net/s03e08-aircraft-carrier-explosion-uss-forrestal-fire/
"Ahh but what caused the power surge?". The switch from external to internal power. See http://www.warbirdsnews.com/warbird-articles/important-planes-navy-carriers-fly.html
Normally, the switch-over didn't cause a problem, because of an isolation switch on the rocket pod, secured by a pin. IIRC, the "Remove Before Flight" tag had been fluttering in high winds, and pulled the pin loose. As often happens, one safety mechanism thwarted another.
I wouldn't classify it as an EMC incident; it was more an electrical power management issue. (And a reminder not to point loaded weapons at anything you don't want to destroy.)