Installation procedures

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Marine Anchor Installation Procedures JLD International B.V. P.O. Box 144 NL – 1135 ZK Edam The Netherlands Tel: +31 (0) 299 622 396 Fax: +31 (0) 299 622 397 E-mail: Info@Earthanchor.eu Website: www.Earthanchor.eu Swivel Eye allows 360° anchoring performance when used on standard mooring installations. THE TOTAL SYSTEM Fig. 1 Fig. 2 Fig. 3 Fig. 4 MARINE ANCHOR SYSTEMS Introduction These methods and procedures cover the description and installation instructions for the patented MANTA RAY® Marine Anchor System. It also contains information on the installation tools, techniques of installing the anchors, and methods to anchor lock or test the holding capacity of each anchor. Description MANTA RAY® Marine Anchors are designed to be driven into the earth (substrate/seabed) by an underwater hydraulic breaker. The tip or drive point of the anchor resembles a star drill with wings attached to the body, an attaching clevis for an anchor rod, and a drive steel receptacle in the body. (Fig. 1) This anchor can be equipped with a 2.14m (1”) x 25mm (1”) forged screw end or threaded anchor rod. (Fig. 2) Certain applications call for the anchors to have cable attachments. The anchors are driven by hand-held breakers to various depths using a 90 pound class breaker. (Fig. 3) Whenusing hydraulic equipment (preferred to reduce turbidity), the operator needs a power source producing 16 to 18 horsepower, 8 GPM (35 lpm), 2,000 PSI (13,780 kPa). The complete anchor system consists of the MANTA RAY® Anchor, an anchor rod (or equivalent), extension rod pieces if necessary, and a swivel eye attached at the terminus. All MANTA RAY® Anchors (MR-SR, 1, 2) are made of galvanized ductile iron and all can be driven with the same standard SGC drive steel and proof loaded with the same LL-1M Anchor Locker. (Fig. 4) After the anchor has been driven to the length of the anchor rod(s), the installer attaches the Anchor Locker device (or dynamometer) to rotate and lock the anchor into position. By observing the gauge on the Anchor Locker or Dynamometer), the operator proof loads the anchor to the desired holding capacity. (Fig. 4) The MANTA RAY® concept of proof loading the anchor takes the guesswork out of anchoring because it puts an actual load on the anchor, testing the soil’s holding capacity. In the vast majority of installations, the desired holding capacity will be attained. But, if the desired holding capacity is not attained, the installer knows the soil is not conducive to reach the necessary load. Therefore, the installer must use a larger anchor, go deeper, or add an additional anchor. Again, the guesswork is taken out of anchoring with MANTA RAY® Anchors.