The Fortress FX-85 47LB Anchor is the legendary choice for serious mariners with 59–68 ft vessels. Revered by boaters and marine experts worldwide as The World’s Best Anchor, it combines cutting‑edge design with proven performance to deliver safety, reliability, and exceptional value on every voyage.
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Half the weight of steel, unparalleled strength — Precision‑machined from an aluminum alloy that equals steel in strength but is only half the weight, making on‑deck handling safer and easier.
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Rustproof and corrosion resistant — Tough anodized finish stands up to saltwater and rugged use, maintaining a handsome, durable appearance mile after mile.
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Faster set, deeper hold — Sharper than dull steel anchors, designed to set quickly and penetrate deeply into common sea bottoms for extraordinary holding power.
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Disassemblable for storage and versatility — Easily taken apart for compact storage, or used as a reliable spare or storm anchor when needed.
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Lifetime Parts Replacement Warranty — Free replacement of any damaged anchor part, forever, giving you lasting peace of mind on every anchor drop.
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Exclusive 32 to 45° fluke angle — Patented feature dramatically increases holding power in soft mud bottoms, delivering superior bite where others struggle.
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Heavy‑duty, ocean‑ready construction — Tough anodized finish and corrosion resistance ensure long‑lasting performance in harsh marine environments.
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Engineered for large boats — Specifically sized for vessels in the 59–68 ft range, delivering the ideal balance of weight, shape, and hold for your size of yacht.
With the FX‑85, you’re choosing a proven anchoring solution that’s been tested coast to coast and around the world. It delivers world‑class holding power in both hard sand and soft mud, backed by Fortress’ legendary design philosophy and a warranty that stands the test of time. Upgrade to the FX‑85 and anchor with confidence on your next voyage.
| Feature | Benefit |
Precision-machined from an aluminum alloy that is as strong as steel, but only half the weight. | - Easy to manage weight
- Rustproof
- Sharper than heavy, dull-edged steel anchors
- Will set faster and penetrate deeper into common sea bottoms for incredible holding power
|
| Can be disassembled | - Excellent as a spare or storm anchor
- Easy to store
|
| Lifetime Parts Replacement Warranty | - Free replacement of any damaged anchor part...Forever!*
|
| Adjustable 32 to 45 fluke angle | - Exclusive and patented feature which dramatically increases holding power in problem soft mud bottoms
|
| Tough anodized finish | - Handsome and durable appearance
- Corrision resistant
|
| 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. |
