MIL-DTL-28619D

Abstract

This specification covers stato mooring anchors, including stabilizers, wedges, and palm extensions. <br>The anchor, with stabilizers, wedges, and palm extensions, should be one of the following classes, as specified (see <a>6.2</a>): </span><pre> Class 1: 200 pound (lb) (91 kilogram (kg)) nominal weight. Class 2: 3,000 lb (1 361 kg) nominal weight. Class 3: 6,000 lb (2 722 kg) nominal weight. Class 4: 9,000 lb (4 083 kg) nominal weight. Class 5: 12,000 lb (5 443 kg) nominal weight. Class 6: 15,000 lb (6 804 kg) nominal weight.</pre> <br> <strong>Beneficial comments, recommendations, additions, deletions, clarifications, etc. and any data which may improve this document should be sent to: Commanding Officer (Code 15E2), Naval Construction Battalion Center, 1000 23rd Avenue, Port Hueneme, CA 93043-4301, by using the Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter.</strong> <br><b><u>Intended Use:</u></b> Stato mooring anchors are for use as permanent mooring type anchors for use in mud or sand bottoms. Stato mooring anchor characteristics were developed to obtain a high holding power to weight ratio of 15 to 1 in mud and 20 to 1 in sand. For further information on stato anchors, a summary of the design, tests, and applications are given in the Naval Facilities Engineering Command Design Manual DM-26 for Harbors and Coastal Facilities. Mud bottom use conditions require that no wedge inserts be used. This permits the flukes to rotate and reach the optimum 50-degree angle between the shank and fluke. The tripping palm extensions are required to achieve this within a reasonable drag distance. Sand bottom use conditions require that wedge inserts must be used. This limits the fluke rotation to an optimum 34 degrees. Tripping palm extensions are not required, but do not detract from the anchor's use in sand. <br>