The acronym CQR refers to a design of boat anchor known as the CQR (Secure) plough anchor, designed (and patented in 1933 and 1934 in the UK and US, respectively) by British mathematician and physicist Sir Geoffrey Ingram Taylor.
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Anchor (Anchor relates to hyperlinks - the underlined ...)
Anchor, burying-type (Burying-type anchor is a type of anchor that ...)
CQR anchor (CQR anchor is a type of anchor, also called ...)