sentences:  On 3 December, the Romanian river torpedo boat "Căpitan Valter Mărăcineanu" was sunk on the Danube by an Austro-Hungarian mine with 1 sailor killed.On 8 December, the Navy joined the ground troops as they started retreating towards the Danube Delta, stopping near Măcin.The Romanian warships spent the last days of 1916 covering the Russians as they retreated North into Russia.