Making a claim here for the ship that did the first Beira patrol. it was HMS jaguar and we were on station when Ian Smith declared UDI. Wiki says it was the Lowestoft but the Jag was on station as the only ship in the south Atlantic station. We raced up to Beira and took station without any specific orders and the Skipper had a hell of a time trying to stop various vessels. He had no real powers to take any action and it was a real strain on him.