For example, the lists of guns of the individual ships, which are considered to be an accurate record produced by a senior state official, are only approximately matched to the paintings.[22] The rigging is only roughly accurate, and has been described by Margaret Rule, archaeological project leader of the Mary Rose excavations, as "a confusing assemblage of shrouds, ratlines and stays". Many details are present, but others are missing, such as the chain-wales (the horizontal platforms extending from the sides) to which the shrouds (the parallel ropes that stabilized the masts) were attached to keep them clear of the hull.[23]