May 2013 Issue
Anchor Tests: Bending More Shanks
Exploring the effects of snatch loads on various anchor designs.
In the first part of this series on anchor-shank strength, we examined how the shanks of anchors that supposedly met the most stringent industry standards could bend under loads that a typical cruising sailboat could encounter. With this installment, we wanted to demonstrate how that might happen in a fact-finding field test. Based on our previous findings, we concentrated our study on a specific group of anchors and specific type of load. The anchors are regarded as “super” high holding power (SHHP) anchors, and the load was a sudden, snatch (or dynamic) load applied at a 90-degree angle to the direction each anchor was set.
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