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Guardian Anchor 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 line, 6-12 ft (2-4 m) of chain and a minimum of 5:1 scope. A minimum of 6 ft (2 m) of chain should be used for every 25 ft (8 m) of water that you usually anchor in. For storm conditions use an anchor one or two sizes larger.

GUARDIAN SELECTION GUIDE
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
GUARDIAN MODEL
  G-5 G-7 G-11 G-16 G-23 G-37 G-55 G-85 G-125
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  
Weight 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
  G-5 G-7 G-11 G-16 G-23 G-37 G-55 G-85 G-125
Weight 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
Hard Sand Holding
Weight 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
Soft Mud Holding
Weight 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
  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
  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

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