| 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. |
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| Model | G-5 | G-7 | G-11 | G-16 | G-23 | G-37 | G-55 | G-85 | G-125 | |
|
Boat
Length
|
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| 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 [diagram] | ||||||||||
| 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 [diagram] | in | 11" | 13" | 15" | 17" | 19" | 22" | 25" | 28" | 31" |
| mm | 179 | 330 | 381 | 432 | 483 | 559 | 635 | 711 | 787 | |
| "C" Stock Length [diagram] | 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. |
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Fortress Marine Anchors
1386 West McNab Road
Fort Lauderdale, Florida 33309-1109 USA
Telephone: 954 978-9988 | 1-800-825-6289 (U.S. Only)
Fax: 954 974-5378
www.fortressanchors.com
info@fortressanchors.com
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