An item dated Petrograd 12 March reported that on the 9th two Russian torpedo boats on reconnaissance near Warna were attacked by submarines of the enemy. The torpedo boat Luitenant Poestsjin was blown up. A part of her crew was saved by the second torpedo boat.(1)
Note
Conway’s All the World’s fighting ships 1906-1921 calls her Leitenant Pushchin, destroyer of the Z-Zh-class and which was lost while striking on 10 March