Whats a yacht knot?
https://www.thriftbooks.com/w/chapman-essential-marine-knots_dominique-le-brun/759575/?mkwid=saagKIyOj%7cdm&pcrid=70112909712&pkw=&pmt=&plc=&gclid=EAIaIQobChMItZvjg7q93AIVRbnACh3mwAoMEAQYBiABEgK0tfD_BwE#isbn=158816277X&idiq=9223200