XYZ Extreme Boat Anchor

Technical Specifications

Fluke: High Quality Hot Dip Galvanized Steel
Shank: High Quality Hot Dip Galvanized Steel or Mirror Polished 17-4PH Stainless Steel
Cutting-Edge Saw Blade Insert: 17-4PH precipitation-hardened Stainless Steel

Boat Length* Shackle Size Chain Size/Length Three-Strand
Nylon Rope Size
33lbs / 15kg Up to 63’/18M 3/8”/10mm - 7/16”/12mm 5/16” - 7/16”
25’/8 M
3/4”/20mm - 1”/25mm
18bs /8 kg Up to 42’/13M 1/4”/6mm - 3/8”/10mm 1/4”- 5/16
18’ /6 M

*Suggested anchor weight/boat size is limited for use on a good anchoring bottom such as deep and
consistent sand, mud and clay. Boat size recommendations are for boats of average windage and proportions
in 35 knots of wind, average good bottom conditions, and moderate protection from open seas. Note that the
loads in 43 knots of wind are twice as much as in 30 knots.

Length Width Hight Usable
Fluke Surface Area
Fluke Thickness
33bs / 15 kg 23”/585mm 20”/502mm 12.25”/344mm 1577cm2/244”2 3/8”/10mm
18lbs / 8 kg 18”/468mm 16”/412mm 11.5”/294mm 889cm2/138”2 5/16”/8mm

Shackle Attachment

Bow-roller pin hole

Eliminate ROLL-BAR: collection of debris grass and rocks, can choke the fluke. Roll-bar anchors drag in pure sand when the shank and roll-bar are still visible.

decreases total weight requirement by up to 40%.


Extreme’s fluke is long, thick and heavy (Distance A). During penetration all weight is transfered to the back that enables fast setting in a short distance.




Watch the
XYZ boat anchor
in action. Video of our
boat anchor during its
developmental stage...


Distributing most of the weight backward by extending long thick and heavy blade’s surface (Distance A) and reducing distance between shackle point and front fluke’s tip (Distance B) enables excessive force to be transferred at the front fluke’s sharp point. Force on the front tip (on the 15kg/33lbs Extreme) is equal to about force on average boat anchor of 45kg/100bs.

Once set, the Extreme is designed to stay buried even if the scope is shortened to as little as 2:1.

Fluke is designed with the DHSC - Dynamic Horizontal Stability Control that enables the XYZ boat anchor to rotate 360° below the surface..

The Cutting-Edge enables penetration through hard bottoms: slippery weeds, corals*, small rocks etc.

Sharp Edges

*XYZ urges mariners, whenever possible, to avoid anchoring in living coral to avoid damaging this important ecosystem.

A boat anchor should NOT BREAKOUT when overpowered if set correctly in good holding ground. It has long been an accepted theory that any boat anchor will eventually breakout if pulled on hard enough, even if set well in good holding ground. In other words: A boat anchor system's weakest link is its holding power. At XYZ, we claim that this theory is not valid! With the Extreme’s huge strong fluke, ultra short strong shank, ability to dig extremely deep, and the ability to correct itself for different angles of pull; The XYZ WILL NOT BREAKOUT if overpowered, but will continue to bury! The Extreme has been repeatedly tested under extreme conditions (up to 1100 HP commercial vessel). When the XYZ was set in deep sand, we were ALWAYS able to break the recommended size rode (often 5/16" chain) WITHOUT the XYZ breaking out or deforming in ANY way! Your XYZ holds! It will not breakout.*

*Assumes that the boat anchor is well set in deep sand. In other, lesser holding bottom conditions, the XYZ will set and hold better than any other anchor of similar weight.

Force Direction
from 0° to -170°

Rotation Point

The boat anchor on your boat should be like the brakes on your car, designed for use in the most severe situations! When your life and your boat depend on a boat anchor, there should be no compromises! The XYZ has been tested under EXTREME
loads. 5/16"/8mm chain broke - the XYZ held!

The Design of the Extreme enables 360° rotation. Even when pulled from 170° backwards, the XYZ will rotate horizontally and continue to set deep.

The Cutting-Edge enables penetration through hard bottoms: slippery weeds, corals*, small rocks etc.

Sharp Edges

Usable fluke
(Extreme 33lbs/15kg)
surface area:

That is equal to about
CQR or Bruce anchor

Almost 80%
of the boat anchor’s weight is in large
and heavy
fluke surface

360° Rotation

A long shank is easy to bend or even break; a short shank is much stronger. The optimum shank is short, strong, and sharp on both the bottom and top edges. Sharp edges allow the shank to cut through the bottom, not restricting the boat anchor's ability to bury deeply. ALL EXISTING BOAT ANCHORS have long shanks simply because the boat anchor design does not allow them to be shorter.

Shackle Attachment

Ultra short, light, sharp
and strong Shank has almost no penetration resistance.

Bow-roller pin hole

The Shank is made of 17-4PH mirror polished stainless steel or high strength galvanized steel.

Important notes:

The setting and holding ability of ANY boat anchor is not only a function of boat anchor size, weight and design; it is also a function of the seabed surface and its substance. Some seabed surfaces offer poor holding to ANY boat anchor. *Boat anchor weight/boat size suggestions are based on good anchoring bottoms such as deep consistent sand, mud and clay.

Performance data for XYZ boat anchors are also based on using appropriate size rode for the boat anchor weight and boat length. XYZ Marine Products does not grant any warranty on holding power or performance.

Testing to failure was done using various 11 lbs/5kg – 32lbs/15kg XYZ boat anchors. In the USA, tests were done on deep consistent and/or mixed sand, at numerous locations in Long Island Sound, NY. We used a 45’/15 ton, 400HP fishing boat. The boat is owned by Captain Jim McGinness, who witnessed all the testing. Similar tests have been done on the Croatian Adriatic with boats up to 1000 HP. Tests were done with high RPM achieving sudden impact to the boat anchor that was properly set. Several times we broke 3/4“/20mm (rated at 13,000 lbs/6 ton) three- strand twisted Nylon rope. We also broke 3/8”/10mm stainless steel cable wire and 5/16”/8mm chain. Of all of the rhode materials, chain was the hardest to break! After repeatedly testing to rhode failure, the XYZ boat anchor was carefully inspected. IT SUFFERED NO DAMAGE OR DEFORMATION!

*The XYZ urge mariners, whenever possible, to avoid anchoring in living coral to avoid damaging this important ecosystem.
Because of continued product improvement, XYZ reserves the right to make changes without notice.
USA Patent # 5,469,802 USA and International Patent Pending