Grasp Reflex [Common Meter]

Der Untergang der Titanic
A white-knuckled grip on the rail,
  though the ship is sinking.
 The brain insists one hold tightly;
   there's no mind for thinking.

A samaritan pries at your
  fist, but it will not budge.
 In giving up, he feels guilty --
   conscience jury and judge.

You couldn't wedge just a single breath
  to crack a space for thought.
 A simple thing it is to let go,
   but look what fear has wrought.

A quarter million tons now drags
  you to the cold, dark depths.
 Until the body's unthinking 
   gasp of watery breath.

The hand lets go, but still you sink
  trapped by your last mistake.
 The tragedy of a grasp reflex 
   that you could not break.