22kg
46lb
21kg		 #45
47lb
21kg		 Hi-Tensile
33lb
15kg		 T-4000
30lb
14kg		 G-37
18lb
8.2kg		 FX-37@45°
21lb
9.5kg
Test:
280lb
127kg		 Test:
440lb
200kg		 Test:
725lb
329kg		 Test:
725lb
329kg		 Test:
734lb
333kg		 Test:
2,175lb
987kg

San Francisco Bay, CA, April 1990
*Guardian tested same location, Aug 1991

The San Francisco Bay Muddy Bottoms Test

Sponsored by a major U.S. marine equipment supplier, the Soft Mud Anchor Tests were also verified by E. S. Maloney and witnessed by boating journalists and competing manufacturers.

The Soft Mud Tests served to illustrate the dramatic effects that differing bottom types can have upon various anchor designs. These tests also marked the debut of FORTRESS' revolutionary adjustable shank-fluke angle feature, which provided a whopping 263% holding power increase in soft mud!

 

Click to review the different tests:

[U.S. Navy Anchor Test]
[Miami Sandy Bottom Test]
[San Francisco Soft Mud Test]
[French and Holland Test]