daggerboard

American  

[dag-er-bawrd, -bohrd] / ˈdæg ərˌbɔrd, -ˌboʊrd /

noun

Nautical.

1. a removable board on a small sailboat, typically of small dimension fore and aft, lowered into the water through a trunk to serve as a keel.

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daggerboard British  

/ ˈdæɡəˌbɔːd /

noun

1. a light bladelike board inserted into the water through a slot in the keel of a boat to reduce keeling and leeway Compare centreboard

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Etymology

Origin of daggerboard

dagger + board

Example Sentences

When the boats are foiling, they’re riding only on the leeward daggerboard and both rudders.

From Washington Times • May 25, 2017

Josh’s daggerboard: Send a letter to your favorite team and they may just send you a free “fan pack” in return.

From Slate • Sep. 23, 2013

Mike’s daggerboard: In praise of James Lofton, Hall of Famer, radio announcer, and childhood teammate of Warren Moon.

From Slate • Sep. 23, 2013

The low-draft daggerboard version has a large centerboard box running the full height of the cabin, which others have unkindly dubbed the "wailing wall."

From Time Magazine Archive

Boats of this type had a square stern, a curved stem in profile, a strong flare, a flat bottom, a sharply raking transom, and a center board of the "daggerboard" form.

From The Migrations of an American Boat Type by Chapelle, Howard I. (Howard Irving)