More than 1,700 warheads are affected by the problem which would cause them to explode one after another, an effect known as "popcorning."
A typical Trident nuclear missile contains three to six warheads, and some submarines carry up to 24 missiles, meaning the potential for disaster could be huge.
Defence companies try to prevent accidental explosions of warheads by designing them to be "singlepoint safe" which means that a sudden knock at a single point should not
detonate the plutonium core. The typical scenario would see the weapon being dropped from a crane while being loaded on or off a submarine.
Nuclear Popcorn Machine
Kinda glad I live a few thousand kilometers from the sea...
edit: Never mind the poll. I canceled it but it still showed up for some reason