Dear Richard Leary:
Thank you for posting on History Hub!
I conducted a search in the National Archives Catalog and did not see anything related to logs for a Mobile Inshore Undersea Warfare Surveillance unit.
You may want to contact the Navy directly to see if they still hold these logs.
Also, here is a National Archives web page related to Naval Deck Logs that says, “There are a few logs of non-ship units, such as receiving stations or Motor Torpedo Boat squadrons (MTBRONs), but none dating from after 1942.” I am unsure if your unit was on a ship or not.