This anchor, known as the "Danforth", is the most common type used on recreational boats. Designed for sandy, muddy or gravel bottoms, it has a few moving parts, making it easy to store on board. Cheaper than other models, the "Danforth" nevertheless requires a rode (anchor line) at least five times the depth of the water to hold securely. For hard sandy bottoms, anchors with narrow flukes are recommended.
In addition to providing stronger holding power, the "Bruce" anchor requires a minimum rode length of only three times the depth of the anchorage. In other words, almost half the length of the rode needed for a "Danforth" anchor.
With superior holding power compared to other models, the "Plow" anchor - like the "Bruce" - is not particularly easy to find on the market. However, it is the safest option: it rarely breaks free when the current or wind changes direction.
Designed for rocky or coral bottoms, the "Grapnel" anchor can be homemade using a PVC pipe and construction steel bars. Its main advantage is that the hooks, if caught on the bottom, can be easily released when the anchor line is pulled.
