At 16:00 on 9 April, the flotilla sent an officer ashore at Tranøy 80 km (50 mi) west of Narvik and learned from the locals that the German force was 4–6 destroyers and a submarine.
Den 9. april kl 16:00 sendte flotillen en officer i land ved Tranøy ca. femoghalvfjerds km vest for Narvik og erfarede derved fra lokalbefolkningen, at den tyske styrke bestod af 4-6 destroyere og en undervandsbåd.