The firm G. Doeksen&Zonen, Terschelling had to deliver the tug Volharding with a gross register tonnage of 135,34 tons, a draught of 7.5’, 360 ihp horsepower and a maximum constant speed of 11 miles. She was to be present at Willemsoord, Netherlands within 24 hours after the order of the Navy Commandant at Willemsoord for service as communication vessel and to assist by the war buoy laying off Terschelling during the same mobilisation. Her bunkers were to fully filled with enough oil and grease for 8 days steam (on Government costs). She was not be armed. Crew numbered 7-8 men.
The first contract with this firm dealing with the Volharding was approved by the minister on 19 March 1914 and was finally cancelled on 5 October 1929 ending since 5 October 1934.
Source
Archive Marinestaf 1886-1942 (National Archive, The Hague, Netherlands) inventory number 170. A list of private owned vessels which were to be of the disposal of the authorities in the line of defence of Den Helder during a mobilisation. Dated 1926.
