In service: 1969 - 1998
Owner: NV Nieuwe Rotterdamse Sleepdienst - Rotterdam; on 22-06-1988 Smit Havensleepdiensten BV - Rotterdam
Built: Launched 19-06-1969; delivered 24-07-1969.
Shipyard: NV Shipyards v/h H.H.Bodewes - Millingen.
Construction number: 684
Dimensions: 33.23 x 31.31 x 9.56 x 3.81 x 4.67 m.
Content: 253 GRT.
Call signal: P.D.G.R.
Registration number: 6923888 IMO; 12776.Z.Rott.1969; 27.12776 IVR
Machines: 2x four-stroke 10 cylinder Werkspoor type RUB.215-10 Nos. 2914 & 2933; in 1981, 2x four-stroke 10 cylinder Stork/Werkspoor type 6FFHD240, 240x260 nos. 70415-1 + 70415-2 each coupled to a Voith/Schneider propeller; 1 generator of 80 kW; 1 generator of 48 kW.
Power: 2,300 apk; after 1981, 3,000 MOT; 2,206kW
Speed: 12 knots.
Pulling force: 30 tons; after 1981, 32 tons.
Purchased: New construction
Sold: On 24-12-1998 as SMIT HAMBURG to Smit Internationale Tugboot Maatschappij "Smit Salvor" BV (Smit International{Deutschland}) GmbH - Hamburg

Details: From 08-04-1976 to 29-06-1978 as AQUANAUT of Smit Internationale Havensleepdiensten BV - Rotterdam.
Submitted to Smit Havensleepdiensten BV - Rotterdam on 252-06-1988.
On 12-12-2001 as ARGUS to Harms Bergung-, Transport- & Heavylift GmbH & Co.- Hamburg.
In December 2009 as MISTRAL to Lührs Shiffahrt GmbH & Co.KG – Hamburg.
On 06-04-2021 renamed LEVENSAU.