About Fortress Anchors
Fluke Position
Two Fluke Angle Positions Available
The Fortress anchor can be re-assembled from the normal 32 degree angle to 45 degrees to increase holding power in soft mud bottoms by as much as 400%!


To change the fluke angle from 32° to 45°
- Loosen the nuts on the clips that are attached to the flukes.
- Slide the narrow rounded rod (called the stock) through the crown and out the other side until it goes through the shank and clears both sides.
- Then, push the flukes forward on the crown toward the shackle end of the shank, and you will see another hole in the crown.
- Re-assemble the anchor with the stock going through this other hole, which should be covered with a sticker that says “Soft Mud Anchoring only”.
For all tech questions please email us at techsupport@fortressanchors.com and a Fortress Marine Anchors representative will respond in 24-48 hours.