Fortress Fx-37 21lb Anchor For 46-51' Boats
The Legendary Fortress Anchor
In test after test, from coast to coast and from around the world, no anchor in history has been called The World's Best Anchor by more boaters and respected marine experts than Fortress...and for good reason.
Years of research and development, high-tech materials and manufacturing and thousands of real world tests are your assurance of performance, quality, and value. Fortress weighs only half as much as heavier steel anchors and yet outperforms them all.
Why? Because the Fortress design does not depend upon weight to provide world class performance. All this adds up to your best value in anchoring safety and convenience.
| Feature | Benefit |
| Precision-machined from an aluminum alloy that is as strong as steel, but only half the weight. |
|
| Can be disassembled |
|
| Lifetime Parts Replacement Warranty |
|
| Adjustable 32 to 45 fluke angle |
|
| Tough anodized finish |
|
| 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. |
The Legendary Fortress Anchor
In test after test, from coast to coast and from around the world, no anchor in history has been called The World's Best Anchor by more boaters and respected marine experts than Fortress...and for good reason.
Years of research and development, high-tech materials and manufacturing and thousands of real world tests are your assurance of performance, quality, and value. Fortress weighs only half as much as heavier steel anchors and yet outperforms them all.
Why? Because the Fortress design does not depend upon weight to provide world class performance. All this adds up to your best value in anchoring safety and convenience.
| Feature | Benefit |
| Precision-machined from an aluminum alloy that is as strong as steel, but only half the weight. |
|
| Can be disassembled |
|
| Lifetime Parts Replacement Warranty |
|
| Adjustable 32 to 45 fluke angle |
|
| Tough anodized finish |
|
| 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. |