In test after test, from coast to coast and from around the world, no anchor in history has been called ôThe 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.
Anchor Selection & Specifications Guide
Boat size recommendations are for boats of average windage and proportions in 30 knots of wind, average bottom conditions, and moderate protection from open seas. Remember that the loads in 42 knots of wind are twice as much as in 30 knots.
Use 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.
Exclusively on Fortress...
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.
