In total, Jenisch on his fourth war patrol was credited with the destruction of 16,098 gross register tons (GRT) of shipping.

[2] On 31 August 1940, HMS Fiji sailed for the African Atlantic coast to take part in Operation Menace (the Battle of Dakar) but before she could join the task force, Fiji was damaged by a torpedo from the U-32 on 1 September and had to return to Britain for repairs, which lasted for the next six months.

[3] On 26 October 1940, RMS Empress of Britain was spotted by a German Focke-Wulf C 200 Condor long-range bomber, commanded by Oberleutnant Bernhard Jope, 140 kilometres (87 miles) west of Isle of Arran.

[4] Jope's bomber strafed Empress of Britain three times and hit her twice with 250 kg (550 lb) bombs setting the ship on fire and causing severe damage.

On joining the West German Bundesmarine in 1956, Jenisch held staff positions and commanded the training frigate Hipper (originally a Black Swan-class sloop, the ex-HMS Actaeon) for a time.