Agatha Christie would have been proud of it: On the morning of 23 July 2015 the chemical-Product tanker Selandia Swan was on passage from Scheveningen, Netherlands to Ust-Luga, Russia through the North Sea with the Third Officer on watch without a lookout. During the 1000 crew break for coffee and tea and AB went to the bridge to make an internet phone call to speak to his family.
On the bridge the AB went to the port side of the centre console to use the cordless telephone. He did note the third officer. There was no answer when the AB called out that he was using the phone but assumed the officer was at the chart table or in the toilet. As he spoke he walked around the bridge and realised the third officer was not there.