Phil,
Also try the
Summary of Events for No. 321 Squadron. Burgerhout is mentioned on 1 Feb 1943 to command a detachment in S. Africa.
Summary here:
https://discovery.nationalarchives.g...ils/r/D8401443
(With a free account, you can download the file in a minute).
He and others had PBY training at NAS Corpus Christi:
https://catalog.archives.gov/id/1339...bject-thumb--3
Regards, Leendert