British claims credited HMS Arethusa's electronic-warfare equipment with preventing Altmark from transmitting. Altmark nevertheless continued to send radio messages. The rocky outcrops and mountains around the fjord offer a possible explanation for the discrepancy. That terrain may have protected the German ship from interference, so Arethusa's jamming capability alone does not establish that Altmark's transmissions were blocked.
Notable Point · 50:37-51:21
Why Altmark's radio messages challenge claims of successful jamming
Altmark continued transmitting despite British claims of effective jamming, with the surrounding mountains a possible explanation.