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Open data · every figure carries its source

Research / survey
Operated by Alfred Wegener Institute for Polar and Marine Research
Photo: DLR/NASA/Jess Bunchek · CC BY 3.0 de · file
Largest in this registry
#32,796
of 84,014 with a recorded tonnage
Largest research / survey
#33
of 483 of this type with a recorded tonnage
Largest in its fleet
#1
of 2 in this fleet with a recorded tonnage
In brief
RV Polarstern (meaning Polaris) is a German research icebreaker of the Alfred Wegener Institute for Polar and Marine Research (AWI) in Bremerhaven, Germany. Polarstern was built by Howaldtswerke-Deutsche Werft in Kiel and Nobiskrug in Rendsburg, was commissioned in 1982, and is mainly used for research in the Arctic and Antarctica. The ship has a length of 118 metres (387 feet) and is a double-hulled icebreaker. She is operational at temperatures as low as −50 °C (−58 °F). Polarstern can break through ice 1.5 m (4 ft 11 in) thick at a speed of 5 knots (9.3 km/h; 5.8 mph). Thicker ice of up to 3 m (9.8 ft) can be broken by ramming.
Vessel particulars
Every value is as recorded in the source. Blanks are values the source does not hold — none is estimated from a sister ship or a class average.
Identification
Construction
Measurements
In context
Every figure in this section is a count, a rank or a percentile over vessels actually held in this registry — not over the world fleet, which is larger. Nothing here is estimated.
At 12,614 gross tons, RV Polarstern is the 32,796th largest of the 84,014 vessels in this registry that report a tonnage. The median across that set is 5,994 GT, so this hull is about 2.1 times the typical vessel on record here. The largest measures 499,167 GT.
Among the 612 research / surveys held here, it ranks 33rd by tonnage — larger than 93% of that group. Their median tonnage is 2,180 GT, and the largest tenth begin at 9,452 GT. The flag most often flown by this group is United States (90 ships). The yard that appears most often against it is Wärtsilä, with 36 hulls on record.
Germany is the country of registry for 885 vessels in this directory, of which RV Polarstern is the 124th largest by tonnage. The most common class under that flag is vessels this registry holds no type classification for (446 ships), and the median vessel measures 916 GT. Browse every ship flagged Germany.
Narrowing to both dimensions at once, this registry holds 40 research / surveys flying the Germany flag, of which none is larger than RV Polarstern.
RV Polarstern was built in 1982, making it 44 years old. It is one of 1,706 hulls in this registry delivered that year, a cohort whose median tonnage is 3,592 GT; within it this ship is the 471st largest. Across the whole of the 1980s the registry holds 13,213 vessels, median 3,004 GT. The median build year across the entire registry is 1995.
The registry attributes 210 vessels to Howaldtswerke-Deutsche Werft, with a median tonnage of 30,285 GT, delivered between 1905 and 2010. See the rest of that yard’s output.
At 102.2 m overall, RV Polarstern is 31.2 m longer than the 71.0 m median for research / surveys on record, with a beam of 25.0 m and a draft of 10.7 m.
IMO numbers are issued in broadly chronological blocks. Within 500 either side of 8013132 this registry holds 53 other vessels, whose median build year is 1982 and which range from 1980 to 1985. That places this hull’s registration in the same part of the series, consistent with its recorded build year of 1982.
Its IMO number, 8013132, carries its own check digit. The first six digits are weighted seven down to two and summed — 8×7 + 0×6 + 1×5 + 3×4 + 1×3 + 3×2 = 82 — and the last digit of that total, 2, must equal the seventh digit, 2. It does, so this number is well formed.
Nearest by tonnage among research / surveys
| Ship | Built | Gross tonnage |
|---|---|---|
| Kapitan Dranitsyn | 1980 | 12,919 |
| S. A. Agulhas II | 2012 | 12,897 |
| Akademik Fedorov | 1987 | 12,660 |
| RV Polarstern (this ship) | 1982 | 12,614 |
| Oceanic Vega | 2010 | 12,550 |
| Xue Long 2 | 2019 | 12,366 |
Record
Events recorded against this vessel in the source, with the dates the source gives. An event with no date is listed last rather than assigned one.
Same yard, same years
No ship class is recorded for this vessel, so these are not asserted to be sister ships — they are contemporaries from the same builder, shown because that is what the data supports.
Same fleet
Provenance
Vessel recordWikidata, released under CC0, keyed on this ship’s IMO number.
Written summaryQuoted from RV Polarstern on English Wikipedia, reused under CC BY-SA 4.0.
PhotographBy DLR/NASA/Jess Bunchek, reused under CC BY 3.0 de.
| 1970 |
| 12,288 |