Mighty Thalassa sisters passing each other, 12 June 2017

A pair of 150,000 tonne sisterships, Thalassa Patris and Thalassa Elpida, pass each other while transiting the Harwich Deep Water Approach Channel – that’s 300,000 tonnes of steel with a closing speed of around 31 knots . . . that’s 35mph or 57kph . . .