HMS Brisk was built in 1910, a type H (Acorn) destroyer with a top speed of 27 knots. Range was 2,000 miles at 13 knots. Armaments included - two primary 4 inch (QF) guns, two secondary 3-inch QF guns and two 21 inch torpedo tubes.S.S. Lugano was a cargo steamer built in 1917 by Irvine's of Hartlepool and owed by the Gulf Line. Gross weight: 2,350 ton. She had left Norfolk, Virginia with convoy HH24 and was bound for Liverpool with cotton, steel and alcohol. Submarine U79 was a Class: UE, Type: Ocean-going mine-laying submarine and was launched on 9th April, 1916, she was commissioned into the German Imperial Navy on May 25th, 1916.