I believe that Maffit followed Cooke on the Albemarle, followed by Worley. I've never seen anything connecting Guthrie with Albemarle. Where did you see this? Was Guthrie assigned as an officer for the Arkansas? I agree that anyone present in authority would have quickly attempted to recover the cargo from the barge. A diving bell is a pretty specialized piece of gear. Wonder where they got it? Vicksburg? People writing about events years after tend to smooth things over a bit.