The original was a diagram in Encyclipaedia Britannica 1911. I copied this one from
File:Rigging1.png produced by Ray Van De Walker.
I edited it and used it for an illustration of "mainstay" in Wiktionary. For the full legend, see the Rigging1.png file.
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Stylised image representing mainstay on a frigate of the early 19th century
Image stylisée représentant les trois mâts d'une frégate du début du XIXe siècle avec toutes ses "manoeuvres dormantes" (cordages de stabilisation des mâts)