[1] On 10 May 1941 Tower Field was steaming in ballast from London to Newcastle when a German aircraft attacked and damaged her off the Outer Dowsing Buoy in the Thames Estuary.

[3] Early in 1943 Empire Tower, under Captain David John Williams OBE, joined Convoy XK-2 from Gibraltar to the UK.

[3] On 5 March the German Type IX submarine[4] U-130 attacked the convoy and sank Empire Tower, Fidra, Ger-y-Bryn and Trefusis.

[3] The Royal Navy armed trawler HMS Loch Oskaig rescued three survivors and landed them at Londonderry,[3] Northern Ireland.

One week later, on 12 March, a depth charge attack by US Navy destroyer USS Champlin west of the Azores sank U-130 with the loss of all 53 hands.