V 103 Sylvia, later called Sperrbrecher 33, was a German steamship which was converted into a Vorpostenboot for the Kriegsmarine during World War II. Following the war, it became a part of the German Mine Sweeping Administration.
Drau was built in Bremen by Deutsche Schiff- und Maschinenbau. She was subsequently renamed Sylvia.[1] On 1 October 1939, it was placed into the newly formed 1st Vorpostenflotille.[2] The ship participated in the German invasion of Denmark in April 1940, escorting the steamer Rugard and tugs Monsun and Passat alongside V 102 Cressida and several minesweepers. The group landed three companies of the 170th Infantry Division at Middlefart.[3]
Sylvia remained a part of the Vorpostenflotille until it was disbanded on 1 October 1940, transferring to the 3rd Sperrbrechtflotille as Sperrbrecher 33. After the end of World War II, Sperrbrecher 33 was transferred to the German Mine Sweeping Administration.