Russian naval officer Isenbeck according to a report from the Military Observer at Riga, Latvia dated 22 July 1921

Gangut-class battleship©Warshipsresearch.blogspot.com

The information was received from the Latvian General Staff and considered to be reliable. In fact few was known dealing with the personnel of the Central Institutions except that the majority in authority were former naval officers already officers prior to the First World War. The descriptions of the officers were supplied by a former high officer of the Imperial Russian Navy which now stayed in Latvia. Former 2nd class captain. “Temporarily acting commander of the naval forces and manager of the Naval Commissariat in October 1920. Sickly and very nervous; a fune gunnery officer on big ships; was senior gunner on the [battleship] Petropavlovsk and flag gunner of the Dreadnought brigade in the time of the Czar; has no exceptional abilities."(1)

Note

1. Gangut-class, commissioned in 1915, late renamed Marat.

Source

National Archive. Record Group 165: Records of the War Department General and Special Staffs Series: Security Classified Correspondence and Reports. File Unit. Russia: Navy - MID 2503-16 THRU 2503-265. Roll 1443.