Bruce vs Danforth vs Plow: The Three Classic Anchor Designs Compared
By Lance Greiner — General Manager, Boater's World · Former Platform GM, Travelcamp RV· November 15, 2025· 1 min read· Updated Nov 17, 2025
Lance Greiner is a career marine and automotive retail professional with more than 15 years of dealership management experience. He currently serves as General Manager at Boater's World in Florida, overseeing full mar…
Why trust us
Every article on TopBoatGear is independently researched by the Searchshop Editorial team using manufacturer documentation, independent marine industry sources, and verified owner reviews from boaters across the US. We earn a small commission on qualifying purchases through affiliate links, which never influences our recommendations.
How We Evaluated
We researched and tested the top options, comparing them across key factors including performance, value, ease of use, and reliability. Our recommendations are based on hands-on evaluation and real-world usage data.
Every anchor design in production today is a variation on one of three classic forms: the fluke (Danforth), the claw (Bruce), or the plow (CQR). Each was invented for a specific anchoring problem, each became a global standard, and each is still in production because each still solves the problem it was designed for.
Understanding the three classic designs will make you a better anchor buyer — and a better anchorer.
Head-to-Head
| Danforth | Bruce / Claw | Plow / Delta | |
|---|---|---|---|
| Holding per pound | Highest | Lowest | Medium |
| Sets in soft mud | Excellent | Good | Good |
| Sets in hard sand | Excellent | Fair | Excellent |
| Sets in grass | Poor | Fair | Fair |
| Sets in rock | Poor | Excellent | Fair |
| Resets after wind shift | Poor | Excellent | Good |
| Stores on bow roller | Awkward | Good | Excellent |
| Price per pound | Lowest | Highest | Medium |
The Three Designs
Danforth (fluke)
Invented during World War II for landing craft, the Danforth is two flat, sharp flukes joined to a stock at the crown. It buries flat in soft bottom and develops enormous holding power per pound of weight. It is the lightest anchor per unit of holding force ever invented — and the worst-behaved in changing wind, because the long stock makes it tip out if the pull angle shifts.
Bruce (claw)
Invented in the 1970s for North Sea oil platforms, the Bruce claw is a three-pronged, fixed-fluke anchor that sets on any side. It is the most reliable design in changing wind because it doesn't need to reset when the boat swings — but it has lower holding power per pound than fluke or plow designs.
Plow (CQR / Delta)
Invented in 1933 for British seaplanes, the CQR plow is a hinged-shank anchor designed to plow through sand and bury itself. The non-hinged Delta is a modern, simpler variant. Plows are the workhorses of cruising sailboats — moderate holding, excellent reset, decent in mixed bottoms.
Where Each Wins
The Danforth is unbeatable as a secondary or stern anchor, as a kedge for getting off a soft grounding, and for boats that anchor day-only in known-soft bottom. A Fortress FX-16 (aluminum Danforth) on a 24-foot center console is the best lunch-stop anchor money can buy.
The Bruce wins in tidal anchorages where the boat will swing 180 degrees through the night. It also wins on permanent moorings and on any bottom where a foul-bottom anchor recovery is likely.
The Delta wins as a do-everything primary on bow rollers where a roll-bar new-gen anchor won't fit, and on traditional cruising boats where the deck hardware is sized for a hinged shank.
Where Each Loses
Danforths drag the moment the boat shifts angle, will not set in rock or thick grass, and bend their flukes if you load them past their design limit. Bruces hold less per pound than anything else and run out of holding power on big boats. Plows are mediocre across the board — they're the C+ student of the anchor world. New-gen designs (Rocna, Mantus, Spade) outperform every classic plow in head-to-head testing.
Buying Advice
If you anchor seriously, the answer is rarely a single classic anchor. The right kit for most cruisers is a new-generation anchor as primary (Mantus or Rocna) plus a Fortress fluke as secondary. The Bruce stays relevant as a tertiary for boats that swing in tide, and as the default on small charter and rental boats where simplicity matters.