What is this?

Question

Found this 2" x 6" long pvc pipe, with concrete in it, on farm in Oklahoma, what was it for?
There are six 1/4 " holes around one end, 1/2" from rim(top), where a steel loop is protruding out of concrete but below the rim of the pipe. Two more rolls, of 3/8" holes, 4 each. One 1 1/2" from top, the other 4 holes are 1 1/8" from bottom. All three rolls or bands of holes are some what evenly spaced. There is a lighter area a in band around the two sets of 3/8 holes, that appears to have been where tape had been.

Answer 1

A Homemade boat anchor?