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About the Product
Meet Fortress FX-16, the 10-lb anchor built for 33–38 ft boats. The Fortress legacy is renowned across coastlines and oceans—the World's Best Anchor, trusted by boaters and marine experts for its performance, reliability, and value.
Precision-machined from an aluminum alloy that combines steel-like strength with half the weight, the FX-16 delivers effortless handling, rustproof durability, and fearless performance in the toughest bottoms. It sets faster and penetrates deeper than heavy dull-edged steel anchors, delivering incredible holding power without the bulk.
Why choose Fortress FX-16 for your 33–38 ft boat
- Lightweight strength: At 10 lb, it weighs half as much as a steel anchor, yet matches or exceeds their holding power.
- Rustproof and durable: Anodized finish resists corrosion for long life.
- Sharper, faster grip: Sharp edges cut into seabed more efficiently for immediate setting and deeper reach.
- Fast set, deep hold: Designed to set quickly and hold strongly in common sea bottoms.
- Disassemblable: Breaks down for easy storage, packing, or use as a spare or storm anchor.
- Lifetime warranty: Lifetime Parts Replacement Warranty — free replacement of any damaged anchor part, forever.
- Adjustable fluke: 32°–45° fluke angle with exclusive patented feature to dramatically boost holding power in soft mud bottoms.
- Sea-tested reliability: Proven performance from coast to coast and around the world.
Holding power and performance
- Working Load: 1,250 lb (567 kg)
- 32° Hard Sand Holding Power: 5,000 lb (2,268 kg)
- 45° Soft Mud Holding Power: 1,500 lb (680 kg)
- 32° Soft Mud Holding Power: 750 lb (340 kg)
Specifications and design
- A Shank Length: 31" (787 mm)
- B Fluke Length: 18" (457 mm)
- C Stock Length: 25" (635 mm)
Included hardware
- Proof Coil Chain: 5/16" (8 mm)
- Nylon Rope: 1/2" (13 mm)
- Shackle Size: 5/16" (8 mm)
As part of Fortress' selection guide, the FX-16 is the ideal match for boats 33'–38' in length, providing an optimal balance of weight, hold, and ease of use for everyday anchoring and emergency needs.
| Feature | Benefit |
| Precision-machined from an aluminum alloy that is as strong as steel, but only half the weight. |
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| Can be disassembled |
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| Lifetime Parts Replacement Warranty |
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| Adjustable 32 to 45 fluke angle |
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| Tough anodized finish |
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| FORTRESS SELECTION GUIDE | |||||||||
| Model | FX-7 | FX-11 | FX-16 | FX-23 | FX-37 | FX-55 | FX-85 | FX-125 | |
| Boat Length | |||||||||
| ft | 16'-27' | 28'-32' | 33'-38' | 39'-45' | 46'-51' | 52'-58' | 59'-68' | 69'-150' | |
| m | 5-8 | 8-10 | 10-12 | 12-14 | 14-15 | 16-18 | 18-21 | 21-46 | |
| Weight | lb | 4 | 7 | 10 | 15 | 21 | 32 | 47 | 69 |
| kg | 1.8 | 3.2 | 4.5 | 6.8 | 9.5 | 14.4 | 21.2 | 31.1 | |
| Replaces Steel Anchors | lb | 6-9 | 10-13 | 14-18 | 19-28 | 33-50 | 50-65 | 70-90 | 100-170 |
| kg | 3-4 | 5-6 | 6-8 | 9-13 | 15-23 | 23-29 | 32-41 | 45-77 | |
| HOLDING POWER | |||||||||
| Model | FX-7 | FX-11 | FX-16 | FX-23 | FX-37 | FX-55 | FX-85 | FX-125 | |
| Working Load | |||||||||
| lb | 700 | 900 | 1.250 | 2,000 | 3,000 | 4,000 | 5,250 | 6,750 | |
| kg | 318 | 408 | 567 | 907 | 1,351 | 1,814 | 2,381 | 3,062 | |
| 32 Degree Hard Sand Holding Power | lb | 2,800 | 3,600 | 5,000 | 8,000 | 12,000 | 16,000 | 21,000 | 27,000 |
| kg | 1,270 | 1,633 | 2,268 | 3,629 | 5,443 | 7,258 | 9,536 | 12,247 | |
| 45 Degree Soft Mud Holding Power | lb | 840 | 1,080 | 1,500 | 2,400 | 3,600 | 4,800 | 6,300 | 8,100 |
| kg | 381 | 490 | 680 | 1,089 | 1,633 | 2,177 | 2,858 | 3,674 | |
| 32 Degree Soft Mud Holding Power | lb | 420 | 540 | 750 | 1,200 | 1,800 | 2,400 | 3,150 | 4,050 |
| kg | 191 | 245 | 340 | 544 | 816 | 1,089 | 1,429 | 1,837 | |
| DIMENSIONS | |||||||||
| Model | FX-7 | FX-11 | FX-16 | FX-23 | FX-37 | FX-55 | FX-85 | FX-125 | |
| "A" Shank Length | |||||||||
| in | 24" | 27" | 31" | 36" | 40" | 46" | 51" | 56" | |
| mm | 610 | 685 | 787 | 914 | 1,016 | 1,168 | 1,295 | 1,422 | |
| "B" Fluke Length | in | 14" | 16" | 18" | 21" | 24" | 27" | 30" | 33" |
| mm | 356 | 406 | 457 | 533 | 610 | 686 | 762 | 838 | |
| "C" Stock Length | in | 19" | 22" | 25" | 29" | 32" | 37" | 41" | 45" |
| mm | 483 | 559 | 635 | 737 | 813 | 940 | 1,041 | 1,143 | |
| SUPPORT HARDWARE | |||||||||
| Model | FX-7 | FX-11 | FX-16 | FX-23 | FX-37 | FX-55 | FX-85 | FX-125 | |
| Proof Coil Chain | |||||||||
| in | 3/16" | 1/4" | 5/16" | 3/8" | 3/8" | 1/2" | 1/2" | 1/2" | |
| mm | 5 | 6 | 8 | 9 | 9 | 13 | 13 | 13 | |
| Nylon Rope** | in | 3/8" | 3/8" | 1/2" | 5/8" | 3/4" | 7/8" | 1" | 1 1/4" |
| mm | 9 | 9 | 13 | 16 | 19 | 22 | 25 | 32 | |
| Shackle Size | in | 1/4" | 1/4" | 5/16" | 3/8" | 7/16" | 1/2" | 5/8" | 5/8" |
| mm | 6 | 6 | 8 | 10 | 12 | 12 | 16 | 16 | |
| NOTE: Hard sand holding power figures above represent loads actually achieved on production FORTRESS and Guardian anchors under controlled horizontal pull conditions without dragging or resulting in disabling structural deformation. ** Rope recommendations are based on 25% of breaking strength. Rope must be in good condition. | |||||||||
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