Fortress Anchors Marine Anchor

Fortress Marine Aluminum Fluke Anchor

Fortress Marine Anchors deliver professional-grade holding power through high-tensile aluminum alloy construction that matches steel strength at significantly reduced weight. Models span from the 4-pound FX7 to the 69-pound FX125, accommodating vessels up to 150 feet. Adjustable fluke angles optimize performance across varying bottom conditions - 32 degrees for clay, mud, or sand, and 45 degrees for soft mud. Sharp edges enable quick penetration, with proven pull loads exceeding 200 times the anchor's weight. The corrosion-resistant, anodized finish ensures durability, while the disassemblable design simplifies storage. U.S. Navy testing confirms Fortress anchors outperform heavier steel alternatives without compromising structural integrity. Each unit includes a lifetime parts replacement warranty for reliable vessel security.

Features:

Fortress Marine Anchors are manufactured with lightweight high tensile aluminum alloy that is as strong as steel.

Corrosion-resistant durable anodized finish.

Rust proof finish

Sharper than heavy-duty dull-edged steel anchors

Disassembles for easy storage

Great spare or storm anchor

Features Lifetime Hassle-Free Parts Replacement Warranty

NOTE: Boat size recommendations factor in average windage and proportions in 30 knots of wind, average bottom conditions, and moderate protection from open seas. Also, note that loads in 42 knots of wind ‘weigh’ twice as much as in 30 knots.

We recommend using a 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.

Model

Weight

Recommended Boat Size

Working Load

32° Hard Sand Holding

45° Soft Mud Holding

32° Soft Mud Holding

FX7

4 lbs

16' - 27'

700 lbs

2800 lbs

840 lbs

420 lbs

FX11

7 lbs

28' - 32'

900 lbs

3600 lbs

1080 lbs

540 lbs

FX16

10 lbs

33' - 38'

1250 lbs

5000 lbs

1500 lbs

750 lbs

FX23

15 lbs

39' - 45'

2000 lbs

8000 lbs

2400 lbs

1200 lbs

FX37

21 lbs

46' - 51'

3000 lbs

12000 lbs

3600 lbs

1800 lbs

FX55

32 lbs

52' - 58'

4000 lbs

16000 lbs

4800 lbs

2400 lbs

FX85

47 lbs

59' - 68'

5250 lbs

21000 lbs

6300 lbs

3150 lbs

FX125

69 lbs

69' - 150'

6750 lbs

27000 lbs

8100 lbs

4050 lbs

How to Set a Fortress Fluke Anchor:

Frequently Asked Questions

• What is the Fortress Marine Aluminum Fluke Anchor designed for? The Fortress Marine Aluminum Fluke Anchor is designed to provide high holding power while using lightweight, high-tensile aluminum alloy construction. Models range from the 4 lb FX7 to the 69 lb FX125, with recommended boat sizes ranging from 16 to 150 feet depending on the selected model.
• How do I choose the correct Fortress Fluke Anchor model for my boat? Select the anchor model based on the recommended boat size and working load listed for each model. The FX7 is recommended for boats from 16-27 feet, while the FX125 is listed for boats from 69-150 feet. The recommendations assume average windage, 30-knot winds, average bottom conditions, and moderate protection from open seas.
• Can the Fortress Marine Aluminum Fluke Anchor be adjusted for different bottom conditions? Yes. The Fortress Fluke Anchor uses adjustable fluke angles to optimize performance across different bottom conditions. The product information specifies a 32° setting for clay, mud, or sand and a 45° setting for soft mud.
• How should the Fortress Marine Aluminum Fluke Anchor be stored? The Fortress Fluke Anchor can be disassembled for easier storage. Its lightweight aluminum…