examples of anchors
The weight and the shape of the arms of anchors are designed to hook onto various bottoms (such as firm, loose or reedy).
mushroom anchor
Anchor with a large crown instead of arms.
grapnel
Small anchor with four, sometimes folding, cruciform arms.
plow anchor
Anchor with a plow-shaped arm that pivots on the shank and hooks onto most bottoms.
sea anchor
Solid cone-shaped canvas sack that is dragged behind a boat to counter heaving and strong winds.
stockless anchor
Relatively light anchor with a pair of pivoting palms that fold along the shank.
stocked anchor
Relatively heavy and bulky anchor with a stock and two arms ending in palms.