![]() This is called "load locking" and provides an immediate proof test of each anchor. The anchor is then tipped and proof tested with Williams Anchor Locking Kit from its edgewise-driving position to present its bearing area to the soil. After driving the anchor to the required depth, the driving tool (called drive steel) is removed. Manta Ray anchors have working loads up to 20 kips, and Stingray anchors have working loads up to 50 kips. Manta Ray and Stingray earth anchors are driven tipping plate soil anchors dependant on soil strenght for reaction of tensile loads. The equipment used depends on the bottom composition : in sand areas "MANTA RAY" anchors are used, while in granite and limestone areas stainless steel pins are preferred which are secured either by marine cement or by epoxy cement.Įach mooring is designed for the particular site where it is to be installed and typically consists of the following components : an anchor unit or anchor pin a heavy duty mooring line, with a float attached a metre or so from the anchor point to keep the line off the sea bed a surface buoy on a looped bridle, to make it easy to maintain a floating pick-up line for boats to tie up to. The mooring system chosen uses various embedment mooring technologies proven by specialists John and Judy Halas of Environmental Moorings International, Florida. Unlike other anchoring systems, MANTA RAY actually compacts the soil around itself : a clean, safe and simple operation. There is " no disturbance" or "displacement" of soil. MANTA RAYs are driven into the ground, not augured or torqued, nor is a hole dug or drilled. Through the world, the positioning of moorings is determined by the need to protect sea floor structures of biological and ecological importance. Moorings are used primarily to protect vulnerable sea floor structures and as a secondary benefit they make mooring visiting boats easier. Now there is an environmentally friendly anchor system that installs easily underwater with conventional equipment for buoys, floating docks, man made reefs and more. MANTA RAY & STING RAY anchoring system (marine application) Docks, Moorings and Underwater Securing From the Great Barrier Reef to the Red Sea, Manta Rays are used to anchor moorings that help protect coral reefs and other natural resources. Manual installation of Stingray anchors is not recommended. Pneumatic or hydraulic breakers are acceptable, but a 90 lb. pavement breaker and coupled drive steel. In some applications, Manta Ray anchors are driven into the soil with a 90 lb. Rock drilling steel can also be modified to drive Manta Rays and Stingrays. We can provide striker bar adapters for these types of drills. Top hammer or down-the-hole hammer rock drills are very effective for installation of Manta Ray and Stingray anchors.įor hard soil or weak rock installations, the drill can be used to drill a pilot hole. ![]()
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