Below the rim, figures of oxen encircled it, ten per cubit all the way around the Sea, cast in two rows as a part of the Sea.
KJV
And under it [was] the similitude of oxen, which did compass it round about: ten in a cubit, compassing the sea round about. Two rows of oxen [were] cast, when it was cast.
ASV
And under it was the likeness of oxen, which did compass it round about, for ten cubits, compassing the sea round about. The oxen were in two rows, cast when it was cast.