Wiktionary
bilge keels
n. (bilge keel English)
Usage examples of "bilge keels".
I covered the entire submerged length of the oiler twice, keeping close to the bilge keels on either side, examining every foot of the way with a powerful underwater flash.
The ship was rolling twenty degrees left and right despite her stabilizers and bilge keels, but Johns fixed his eyes on the center of the target area, which wasn't rolling at all, just a fixed point in space.