Greenfield Products 510-R Cast Iron Mushroom Anchor, 10 lb, Royal Blue

The Greenfield Products 510-R is a 10 pound cast iron mushroom anchor finished in royal blue, built to hold small craft steady in soft bottom conditions such as mud or sand. Its flared, bell-shaped design lets the anchor settle into soft substrate and create suction-based holding power rather than relying on flukes to dig in, which makes it a straightforward, low-maintenance choice for boats under 12 feet, personal watercraft, canoes, and kayaks. It also works well as a second anchor aboard larger boats, as a drag anchor for fishing in current, or as a mooring weight for holding small buoys and markers in place.

Because the anchor has no moving parts or flukes to foul, it stores easily and deploys quickly, making it a popular choice for boaters who want a simple, reliable anchoring solution for light-duty use. Recommended scope is 5:1 (5 feet of line for every 1 foot of water depth) to achieve proper holding angle. As with any cast metal product, actual weight can vary slightly due to metal and coating content, and the 10 pound figure listed is the standard approximate weight for this size.

Specifications

• Brand: Greenfield Products
• Manufacturer Part Number: 510-R
• Material: Cast Iron
• Color/Finish: Royal Blue
• Weight: 10 pounds
• Recommended Scope: 5:1 (line feet to depth feet)
• Recommended Boat Size: Under 12 feet
• Primary Use: Mushroom anchor for small craft, PWC, canoes, kayaks; also usable as a drag anchor or mooring weight for buoys and markers

Frequently Asked Questions

What boat sizes is the Greenfield 510-R mushroom anchor designed for? The Greenfield Products 510-R is recommended for boats under 12 feet, including personal watercraft, canoes, and kayaks, and it can also serve as a second anchor aboard larger boats.

How much does the 510-R mushroom anchor weigh? The 510-R weighs 10 pounds, though actual weight can vary slightly due to normal differences in metal and coating content.

What material is the Greenfield 510-R anchor made from? It is made from cast iron, which gives the mushroom shape the density needed to settle into soft bottom conditions and hold position.

What color is the 510-R anchor? This anchor is finished in royal blue, as reflected in the 510-R part number designation.

What scope of anchor line should I use with this anchor? Greenfield recommends a 5:1 scope for the 510-R, meaning 5 feet of anchor line for every 1 foot of water depth.

Can the 510-R be used for anything besides anchoring a boat? Yes, the Greenfield 510-R mushroom anchor can double as a drag anchor for fishing in current, or as a weight for holding small buoys and markers in position.

Does the 510-R mushroom anchor work in all bottom conditions? The 510-R is recommended for soft bottom conditions such as mud or sand and is best suited to light-duty anchoring rather than rocky or hard bottoms.

Is the 510-R a good primary anchor for larger boats? It is intended for light-duty use and boats under 12 feet, so on larger boats it is best used as a secondary anchor rather than the primary anchor.

Does the mushroom shape of the 510-R have flukes like a traditional anchor? No, the Greenfield 510-R has a smooth mushroom (bell) shape with no flukes, which lets it settle into soft bottom and store easily without parts that can foul.

Why might the actual weight of my 510-R anchor differ slightly from 10 pounds? Weights on cast mushroom anchors like the 510-R can vary slightly because of natural differences in metal and coating content during casting; the 10 pound figure is the standard approximate weight.