keelhaul

To discipline by dragging under the keel of a ship.

To rebuke harshly.

To haul under the keel of a ship.

Figuratively, to reprimand severely; haul over the coals. Also keelrake.

To haul under the keel of a ship, by ropes attached to the yardarms on each side. It was formerly practiced as a punishment in the Dutch and English navies.