SKU: 98428652590

Fortress Fx-37 21lb Anchor For 46-51' Boats

Sale price$342.00 Regular price$380.00
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Description

Fortress Fx-37 21lb Anchor For 46-51' BoatsThe 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

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.
  • 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.

 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 98428652590

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B. Ann Oppenheimer
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Reviewed in the United States on May 17, 2026
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Reviewed in the United States on May 23, 2026
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Mal
Omaha, US
★★★★★ 5
Exactly what I needed!
Color: Black
Perfect to organize my jewellery while I travel
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Reviewed in the United States on April 28, 2026
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Tiana
Draper, US
★★★★★ 5
It works so far lol!
Color: Apricotpink, Color: Apricotpink
I like it! I just packed it up with jewelry so when I travel with it (soon) I will update but my necklaces aren't snagging on each other so hopefully it travels well. It looks as good as it does in the pics and packs like a mini suitcase. It does get bulky, but that's because some of my jewelry is big and bulky so if you have flat jewelry it will lay down. I will have it on top so it doesn't get crushed, and will see if it travels well. It looks good and closes so we will see 🤞🏽!!!
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Reviewed in the United States on May 26, 2026
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Amber S
Dallas, US
★★★★★ 4
Spacious and Well-Organized, Just a Bit Bulky for Travel
This jewelry organizer has tons of space and keeps everything neatly separated and easy to find. I love the binder-style layout and the zippered pouch for smaller pieces—it’s super functional and well thought out. The quality feels solid, and it holds a lot without tangling. My only drawback is that it’s a bit too large for convenient travel, especially if you’re trying to pack light. Still, a great option for home storage or longer trips where space isn’t as tight.
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Reviewed in the United States on April 14, 2026

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