"Most cruising yachts spend at least 80% of the time at anchor."
LINK
http://alain.fraysse.free.fr/sail/rode/rode.htm

Forces

Anchoring Tackle

Anchor

Rode - Static Behavior

Rode - Dynamic Behavior

Accessories

Synthesis

"Note 2: If you feel allergic to formulae, tables, curves etc., you
may skip them and directly go to the conclusions of each section!"
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Alot of this is rather hi-tec but there are diagrams and good
descriptions.

Mic67