What

Not a marine-habiting dinosaur: Sea + thesaurus. A sailing lexicon for the different words sailors use for the same things—and the fine distinctions between them.

Whom

Sailing learners. While teaching in summer 2022, I often heard, “Oh, I thought that was called…” My reply: “It is, but…” Classroom language doesn’t always match what you hear aboard.

Sailors crossing regions and cultures. Think British spanner, American wrench. A Pacific Northwest sailor called taking up the last few feet of a halyard “stringing the bow”; on Chesapeake Bay, I learned “sweating.” These are usages I’ve heard, not universal labels.

How

Collect, compare, cross-reference. Corrections and contributions are welcome—especially where, when, and by whom a term is used.

Word origins where illuminating; uncertainty where warranted. Photos, diagrams, and perhaps videos to come.

Glossary

Sail names & wind angle

AWA · Apparent Wind Angle

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A measurement, not a sail.

The angle from the bow to the wind experienced aboard. Boat motion makes apparent wind differ from true wind; AWA helps describe a sail’s working range, but isn’t a sail name. [1]

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Code Zero

A reaching sail developed in offshore racing to fill the gap between a genoa and existing spinnakers. It sailed closer to the wind than a Code 1, earning an earlier slot in the numbered lineup—not a name for “zero wind.” [2]

Gennaker

Genoa + spinnaker. An asymmetric sail combining features of both. Usage sometimes includes a Code Zero; the names aren’t reliably interchangeable. [3] [4]