In The Calm Poem by Linda Hepner

Lulled, the boat drifted,
The boatsman sifted
Sand at his feet
And found a ring.

His bo'sun said 'Linger, '
But tending his finger
On slipped the ring.
The sand at his feet

Unsettled, shifted.
The plug he had lifted,
The plug at his feet
Was the hole for the ring.

In rushed the water.
There came a great slaughter,
Away washed the ring,
Away swept his feet.

He went down, couldn't float,
And his bo'sun, the boat.