Fortress anchors are precision-machined from a high-tensile, corrosion-resistant, aluminum magnesium alloy, and are sharper and able to penetrate faster and deeper into most common sea bottoms than heavier, dull-edged traditional steel anchors which weigh 50% more or even greater.
In the US Navy tests, not only did the Fortress anchors out-perform much heavier steel anchors, they were also able to withstand pull loads that averaged over 200x their own weight ... and without incurring serious damage to the anchors, which was noted in the test report summary:
"The fact that the Fortress anchors incurred no significant structural damage at such high holding ratios suggests that the anchors have been extensively engineered from both the hydrodynamic and structural standpoints."
Additional features include:
Fortress anchors can be quickly disassembled for compact storage as a spare or storm anchor.
Fortress anchors let you choose between two shank / fluke angles to provide outstanding holding power in common sea bottoms - a 32 angle for sand, mud or clay, or a 45 angle for soft mud.
What are Fortress and Guardian Anchors made from?
Fortress Anchors are made from hardened high-tech aluminum magnesium alloy. Fortress anchors are also anodized for a handsome and durable finish.
What is the difference between a Fortress and a Guardian?
Fortress is anodized, which is a chemically bonded coating. This gives the Fortress Anchor greater corrosion resistance and a more attractive appearance. Guardian anchors are not anodized. Fortress anchors have more precision machining done to the shank and flukes, so they are sharper and better able to penetrate the sea bottom deeper, and thus provide more holding power. Fortress anchors have two adjustable angles: 32 and 45 for soft mud. Guardian has just the 32 angle. Fortress anchors have a Lifetime Parts Replacement Warranty, Guardian anchors have a One Year Parts Replacement Warranty.
Anchor size recommendations are for boats of average windage and proportions in 30 knots of wind, average bottom conditions, and moderate protection from open seas. Remember that the loads in 42 knots of wind are twice as much as in 30 knots.
Use three-strand nylon rope, 6-12 ft (2-4 m) of chain and a minimum of 5:1 scope. Also, a minimum of 6 ft (2 m) of chain should be used for every 25 ft (8 m) of water depth. For storm conditions use an anchor one or two sizes larger.
My anchor does not fit into the small anchor locker on my boat. Can I cut the stock to make the anchor fit?
We do not recommend it. The stock is the perpendicular piece of the anchor that your are referring to, and it is the "landing gear" for the anchor. The stock helps to balance the anchor once it reaches the sea bottom, and then the flukes fall forward and the anchor begins to dig in and set.
How can I change the angle of my Fortress anchor from 32 to 45?
If you want to know about this, please go to the following URL in your web browser: http://fortressanchors.com/anchors/fortress/fluke-position