St. Elmo's Fire

Sea state three,
Just to give the ship
A little roll,
Don't set that cup down,
Unless it's one
With rubber on the bottom,
And a big fat base,
Gliding along,
Under low clouds,
That hide a bright full moon,
With the hint of a storm
Coming on,
The bosun reports,
All lights are bright lights,
But urges you
To the bridge wing,
Where you see it,
It dances about the mast,
Wreathes the antennas,
It is a power,
Out of your control,
St. Elmo's fire,
A dancing electrical specter,
A mysterious visitor,
It slips away as it arrived,
Un-noticed,
You may never see it again,
You might never have seen it
At all,
The rumor was,
It didn't exist,
Now you know,
Don't you?