leeboard
Very Low FrequencyTechnical (Maritime/Nautical)
Definition
Meaning
A board or plate lowered into the water on the lee side of a flat-bottomed sailing boat to prevent it from being pushed sideways by the wind.
A device used to provide lateral resistance (counteracting leeway) on a sailing vessel that lacks a fixed keel.
Linguistics
Semantic Notes
A leeboard is specifically a movable appendage, as opposed to a fixed keel or centreboard. It is typically paired (port and starboard), with only the windward one being lowered.
Dialectal Variation
British vs American Usage
Differences
Terminology is identical; usage confined to sailing contexts in both regions.
Connotations
Strongly associated with traditional, often shallow-draft, working boats (e.g., Thames barges, Dutch 'botter') and some small recreational craft.
Frequency
Equally rare and specialized in both dialects.
Vocabulary
Collocations
Grammar
Valency Patterns
The boat has [a port/starboard] leeboard.They lowered the leeboard [to reduce leeway].Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “[No common idioms]”
Usage
Context Usage
Business
Not used.
Academic
Used in historical or technical texts on naval architecture and traditional sailing craft.
Everyday
Almost never used outside of specific sailing communities.
Technical
Core term in sailing and boat design for a specific type of lateral resistance device.
Examples
By Part of Speech
verb
British English
- The sailor leeboarded the barge expertly.
American English
- He leeboarded the sharpie to make it point higher.
adverb
British English
- [Not applicable]
American English
- [Not applicable]
adjective
British English
- The leeboard bracket needed repair.
American English
- They inspected the leeboard hardware.
Examples
By CEFR Level
- [Not applicable for this technical term]
- The old boat had big leeboards on its sides.
- We need to lower the leeboard on the port side to stop the boat from drifting.
- The Thames barge's efficiency relies heavily on its large, pivoting leeboards, which are raised in shallow channels.
Learning
Memory Aids
Mnemonic
Think of 'lee' (the sheltered side) and 'board'. It's the board you put down on the lee side to stop the boat sliding sideways.
Conceptual Metaphor
[Not applicable for highly technical terms]
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid direct translation. "Lee board" is not понятно. The correct Russian term is "шверт" (shvert), though "шверт" can also refer to a centerboard. For precision, use "бортовой шверт".
Common Mistakes
- Confusing it with a centerboard (which is mounted centrally).
- Using 'leeboard' to refer to any underwater fin.
Practice
Quiz
What is the primary function of a leeboard?
FAQ
Frequently Asked Questions
A leeboard is mounted on the side (lee side) of the hull, while a centerboard is mounted in a trunk through the centerline of the boat. Leeboards are often external and easier to retrofit.
Leeboards allow a boat to sail in very shallow water, as they can be raised completely. They are typical for flat-bottomed boats used in rivers and estuaries.
Yes, primarily on traditionally rigged vessels, some small home-built boats, and specific designs where shallow draft is crucial. Modern racing yachts use fixed keels or centerboards.
No. Typically, only the leeboard on the leeward (downwind) side is lowered. The windward board is kept raised to reduce drag.