Type Proteus
Frigoantartico , ex Artlenburg
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The Proteus reefer type was built in six units from 1951. The type ship Proteus was the first reefer new build in the Federal Republic of Germany. The design was created in six units at two different shipyards. The Proteus design was a further development of the last types built before the Second World War and later formed the basis for the design of larger designs by the same shipyard.
background
After the Petersberg Agreement in November 1949 resulted in a further relaxation of the restrictions on shipbuilding, Germany received permission to build six refrigerated ships, the speed of which was higher than that of the Potsdam ships previously permitted . The first two newbuildings, Proteus and Perseus , were ordered for the African Fruit Compagnie of the Hamburg shipping company F. Laeisz . The ship was designed by the shipbuilder William Scholz and the designer Weingart, and the two sister ships built at the Deutsche Werft in Hamburg were delivered in April and July 1951.
technical description
The two ships had a carrying capacity of 3500 tons and a cold storage capacity of around 6200 m 3 . The drive was provided by a MAN six-cylinder diesel engine with 4100 hp, which enabled a speed of 16.5 kn. There were twelve passenger seats available on the first two ships.
Cargo cooling system
Unlike the shipping company's earlier ships, the refrigeration system was able to generate temperatures of +12 ° C to −12 ° C on the one hand, and also maintain deep-freeze temperatures of −20 ° C in the lower compartments of holds 2 and 3 on the other . Three ammonia compressors, each driven by an electric motor (110 hp), were used to generate cold. The cooling was indirect, ie the heat of evaporation of the refrigerant ammonia (NH 3 ) was transferred to brine circuits, which in turn cooled the air in the individual cargo holds. Three brine pumps with a flow rate of 90 m³ / h each at a nominal pressure of 3.4 bar ensured the circulation in the brine systems. Seven air coolers and eight fans were installed to circulate the air (up to 60 times per hour). The room air for cooling flowed horizontally through the cargo, from one side of the ship to the opposite. These air ducts were designed to be accessible, so that cargo controls and temperature measurements in the cargo were made possible. The outer skin, decks and bulkheads of the cargo holds were insulated using the Alfol crinkle method. In addition to saving weight, the aluminum foil used is less fire-prone than the previous organic insulation materials.
Sister ships
In 1955, the Horn-Linie shipping company received two replicas from the same shipyard, which differed in their more powerful drive system with a 5340 hp MAN eight-cylinder diesel engine, an approximately 100 cubic meter larger cargo space and a passenger capacity reduced to six.
A few years later, the limited shipping company Harald Schuldt from Hamburg ordered two more replicas from the Finnish shipyard Valmet Oy Pansion Telakka in Turku, which were built according to the plans of the German shipyard and delivered in 1959. These also had a cargo space that was around 100 cubic meters larger than the direct front end. In addition, the last two units no longer had any passenger compartments and only had a crew of 31 (stems: 40).
The ships
| Ship name | Shipyard / construction number | IMO number | Commissioning | Client | Later names and whereabouts |
|---|---|---|---|---|---|
| Proteus | German shipyard / 626 | 5286037 | July 7, 1951 | F. Laeisz | 1966 Scebeli , 1973 Diamond Fruit , sank in Keelung on January 4, 1977 after a fire on board , later lifted and scrapped |
| Perseus | German shipyard / 627 | 5275179 | August 27, 1951 | F. Laeisz | 1966 Kyrios Stelios , October 26th Machine damage, from March 8th 1974 demolition in Split |
| Horn cap | German shipyard / 693 | 5155070 | May 31, 1955 | Horn line | 1967 Tai Yuan , scrapped in 1986 |
| Hornbay | German shipyard / 694 | 5155006 | September 6, 1955 | Horn line | 1967 Hai Yi , 1972 Kuo Ming arrived in Kaohsiung on November 6, 1975 for demolition |
| Aldenburg | Valmet Oy / 238 | 5009582 | 18th December 1958 | Partner shipping company "Aldenburg" / KR Harald Schuldt, Hamburg |
1968 Frigoartico , 1971 Cabo Bojeador , scrapped from August 31, 1983 at Tien Cheng Steel Manufacturing Company in Kaohsiung |
| Artlenburg | Valmet Oy / 252 | 5025835 | Completed December 30, 1959 / delivered January 1960 |
"Artlenburg" shipping company / KR Harald Schuldt, Hamburg |
1968 Frigoantartico , 1972 Cabo San Agustin , arrived at Tien Cheng Steel Manufacturing Company in Kaohsiung for scrapping on July 19, 1983 |
See also
literature
- Arnold Kludas ; Witthohn, Ralf: The German reefer ships . 1st edition. Koehlers Verlagsgesellschaft, Herford 1981, ISBN 3-7822-0248-1 .
- Prager, Hans Georg: F. Laeisz . from cargo sailors to bulk carriers. Koehlers Verlagsgesellschaft, Herford 1974, ISBN 3-7822-0096-9 .
- Hochhaus, Karl-Heinz: Deutsche Kühlschiffahrt (1902-1995): shipping companies refrigerated ships refrigerated goods . 1st edition. Verlag Hauschildt, Bremen 1996, ISBN 3-931785-11-4 .