Aluminia (ship, 1959)
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The motor tanker Aluminia was the first tanker built from aluminum in inland shipping and was constructed in 1960 by the Hilgers shipyard .
Basic idea
At the end of the 1950s, the United Deutsche Metallwerke AG ordered a preliminary design for the construction of an inland tanker made of aluminum for the shipping company Lehnkering from the Hamburg design office Kölln-Jacobi. The basic idea was the weight saving and the associated higher load capacity of around 120 tons compared to a steel ship of the Gustav Koenigs type .
construction
In contrast to the usual construction with trunk deck , the ship was built as a smooth decker with higher side walls in order to achieve a larger transport volume. With dimensions of 67.60 m length, 8.16 m width on frames and 2.85 m draft, the usable tank space was 1340 m³, which corresponded to a load capacity of 955 tons of petrol or 1160 tons of diesel. In order to maintain the fixed point height required for canal travel , larger cofferdams were built in front and aft, and the fore and aft peaks and the double floor were used as additional ballast tanks . The ship was propelled by a Deutz RBV 6 M 545 diesel engine with 550 kW.
The fuselage consisted of 9 mm thick aluminum sheets (AlMg 3), only the notch was 12 mm and the mountain plate was 17 mm thick. The machine foundations were 30 mm thick. The propeller shaft was insulated in a steel stern tube and built into the cast aluminum stern post. The rudder shafts, rudder blades, anchor hoses, anchors and the chain case were made of galvanized steel. The bollards were provided with a 6 mm thick stainless steel jacket.
The anchor winches, loading and unloading pumps and the cable winch aft were driven hydraulically. The 10 percent higher load-bearing capacity was offset by a 40 percent increase in construction costs. In the case of series production of aluminum tankers, a cost reduction of 30 percent was expected. Since these additional costs were not in good proportion to the larger transport capacity , only the Aluminia and two smaller bunker boats stationed in Koblenz , the Marleen 1 and Marleen 2 , were built.
construction
The plans for the ship came from the Rheinbrohler Schiffswerft Hilgers, which had already built many tankers. The individual sections were manufactured in Kiel - Wellingdorf by "Ambau - Apparate- und Maschinenbau", which had already built aluminum superstructures for the Hanseatic and other seagoing vessels. Since there was no corresponding slipway there, the sections were assembled at the State Shipyard Rendsburg -Saatsee and the launch took place on November 21, 1959. The hull was then towed to Rheinbrohl and equipped there to form a complete ship.
A second tanker, where only the loading area was made of aluminum, was the TMS ATR 1 of the "Aluminum Tankreederei". The bow and stern sections of this ship were made of steel and bolted to the tank area. The middle section made of aluminum was built by Weser-Flugzeugbau GmbH in Einswarden and assembled with the sections built there at the Gebr. Schürenstedt shipyard and boatyard in Bardenfleth . The tank container was barrel-shaped with gangways attached to the side, and the loading and unloading equipment was installed amidships. A planned tanker barge was no longer built. Later the ship was rebuilt and got a steel central nave. The ATR 1 had the dimensions 67 × 9.9 × 2.0 m and a load capacity of 800 tons, the drive was carried out with two motors each 450 HP on two propellers .
literature
- "Aluminia" - a light metal inland tanker . In: Ship and Harbor . Vol. 12, No. 1 , January 1960, p. 50 .
- German inland tanker shipping 1887-1994 by Ingo Heidbrink, Convent Verlag ISBN 3-934613-09-8