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400
The Mushroom anchor
in 400 B.C., the Greeks came up with another version of an anchor. They would drill a hole in the center of a large flat stone and then fixate a triangular eyebolt at the top. The anchor looked like a mushroom and that’s what these devices are still called nowadays. -
750
The first anchor
Before the invention of a “true anchor” people would use stones and sacks of sand to help their ships stand still. The Chinese might have created the first device that looks like a classic anchor back in 2,000 B.C., but the first records of an anchor with two hooked arms were found on Greek coins that date back to 750 B.C. -
Period: 750 to
Ancient Greece (Anchor) to modern
Information not mine. -
The Plow Anchor
The plow was designed to dig into the soil and break it up by forcing the plow thru the soil with excess power. The CQR plow anchor was invented in the early 1930s and was a massive improvement on the previous anchors.
It was designed to dig into the soil and hold fast unless it was overpowered or had too short a scope. -
The Danforth Anchor
A symmetrical anchor pattern with very large, flat flukes was developed in the 1940s. The Danforth had good holding power for its weight but was lacking as a general-purpose anchor. -
The Claw Anchor
Originally designed in the early 1970s by Peter Bruce, the original Bruce Anchor and its copies have garnered a large following among boaters. Being the shape of an open claw, the design intent was to allow the anchor to tip in any direction when it reaches the bottom and still be able to set properly. -
The first new-generation anchor
The Bügel is an anchor created in 1986. It is considered to be the first new-generation anchor as it pioneered a novel configuration that involves a semi-circular roll-bar.