| 摘要 |
PCT No. PCT/GB92/02210 Sec. 371 Date Aug. 19, 1994 Sec. 102(e) Date Aug. 19, 1994 PCT Filed Nov. 27, 1992 PCT Pub. No. WO93/11028 PCT Pub. Date Jun. 10, 1993.A marine anchor comprising a fluke and a shank attached to the fluke is intended for drag embedment in a mooring bed by pulling the anchor substantially horizontally via the shank. Further, it is a particular feature of the anchor that two modes of operation are possible through use of the line extending between the anchor cable attachment point on the shank and the fluke centroid being variable to provide a first line present for drag embedment of the anchor, and a second line utilized when the anchor is embedded, wherein the pulling force on the anchor via the shank can now be essentially upwards, thereby providing an increased holding force due to the increased fluke area presented in the direction of the upwards force. The change in direction from the first line to the second line can be achieved by having the shank pivotal and by providing pivot control members permitting selective pivoting of the shank. Alternatively, two separate cable attachment point can be present in the shank with, as a first example, two separate cables attached to the cable attachment points, whereby the two modes of anchor operation are achieved by transferring operation from a first cable to the second, or as a second example moving the single anchor cable via a guide from the first attachment point to the second. |
