A versatile lightweight anchor
The Danforth anchor is a lightweight anchor developed by Richard S. Danforth in 1939 for use aboard landing craft. It is referred to as a stock-stabilized, pivoting fluke anchor. Its main characteristic is the placement of its large flukes at such an angle that they drive deep into the bottom to ensure good holding power through its relatively high resistance considering its size. The crown lifts the rear of the flukes, forcing their points downward. Good stability is obtained by the placement of the flukes close to the shank, allowing a good length of stock (the anti-rolling rod) to be located in the crown. The rod positions the anchor on the bottom so that one or both of the flukes are ready to dig into the bottom. The anchor may break out and drag if the direction of force changes dramatically (as with a changing tide). Its light weight makes it easy to retrieve and its compact flat aspect makes it easy to stow. On some Danforth anchors, the stock can be folded parallel to the shank for easy stowage. The Danforth anchors provide excellent holding power for their weight and are commonly used on yachts, fishing vessels, and other small craft. They are commonly available in weights ranging from 2.5 to 180 pounds.