Benefiting from years of Fortress Anchor Research and Development, Guardian offers excellent quality, performance and economy. Guardian is made from the same high tensile, corrosion resistant aluminum magnesium alloy and manufacturing precision as Fortress.
The use of slightly smaller extrusion profiles and the elimination of some of Fortress' extra features, such as anodizing, adjustable fluke angles, and several machining steps has resulted in a very affordable alternative to those heavy, rust-prone steel anchors.
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.
Model
G-5
G-7
G-11
G-16
G-23
G-37
G-55
G-85
G-125
Boat Length
ft
12'-16'
17'-22'
23'-27'
28'-33'
34'-41'
42'-47'
48'-53'
54'-62'
63'-72
m
4-5
5-7
7-8
8-10
10-12
12-14
14-16
16-19
19-22
Weight
lb
2 1/2
4
6
7
13
18
29
42
65
kg
1.1
1.8
2.7
3.2
5.9
8.1
13.1
19
29.3
Replaces Steel Anchors
lb
4-6
6-9
10-13
14-18
19-28
33-50
50-65
70-90
100-170
kg
2-3
3-4
5-6
6-8
9-13
15-23
23-29
32-41
45-77
HOLDING POWER
Model
G-5
G-7
G-11
G-16
G-23
G-37
G-55
G-85
G-125
Working Load
lb
350
575
750
1,075
1,625
2,500
3,500
4,625
6,000
kg
159
261
340
488
737
1,134
1,588
2,098
2,722
32░ Hard Sand Holding Power
lb
1,050
1,725
2,250
3,225
4,875
7,500
10,500
13,875
18,000
kg
476
782
1,021
1,462
2,211
3,402
4,763
6,294
8,165
32░ Soft Mud Holding Power
lb
210
345
450
645
975
1,500
2,100
2,775
3,600
kg
95
156
204
293
442
680
953
1,259
1,633
DIMENSIONS
Model
G-5
G-7
G-11
G-16
G-23
G-37
G-55
G-85
G-125
"A" Shank Length
in
19"
22"
25"
29"
33"
38"
43"
48"
53"
mm
483
559
635
737
838
965
1,092
1,219
1,346
"B" Fluke Length
in
11"
13"
15"
17"
19"
22"
25"
28"
31"
mm
179
330
381
432
483
559
635
711
787
"C" Stock Length
in
16"
18"
20"
23"
27"
31"
35"
39"
43"
mm
406
457
508
584
686
787
889
991
1,092
SUPPORT HARDWARE
Model
G-5
G-7
G-11
G-16
G-23
G-37
G-55
G-85
G-125
Proof Coil Chain
in
3/16"
3/16"
3/16"
1/4"
5/16"
3/8"
3/8"
1/2"
1/2"
mm
5
5
5
6
8
9
9
13
13
Nylon Rope**
in
3/8"
3/8"
3/8"
3/8"
1/2"
5/8"
3/4"
7/8"
1"
mm
9
9
9
9
13
16
19
22
25
Shackle Size
in
3/16"
3/16"
1/4"
1/4"
5/16"
3/8"
7/16"
1/2"
5/8"
mm
5
5
6
6
8
10
12
12
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.