The anchor was seen as a symbol of strength as anchors hold down ships even in the stormiest of weather. It was also a popular symbol because of its close resemblance to the cross. Anchors were also used to mark safe houses for those seeking refuge from persecution.
While sheet sizes vary by brand and style, a fitted sheet is similar to its respective mattress in measurements; for instance, 78 inches wide and 80 inches long for a king mattress, compared to 72 inches wide, 84 inches long for a California king. The fitted sheet has a little extra width in the king-sized set.
A king -- or standard or eastern king -- mattress is 76 inches wide by 80 inches long. A fitted king-size sheet may measure slightly larger than the mattress -- about 78 by 80 inches -- so that you can put it on without much tugging and pulling or to allow for shrinkage.