At 20,665 gross tons, Sibir is the 26,250th 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 3.4 times the typical vessel on record here. The largest measures 499,167 GT.
Among the 612 research / surveys held here, it ranks 10th by tonnage — larger than 98% 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.
Russia is the country of registry for 2,810 vessels in this directory, of which Sibir is the 49th largest by tonnage. The most common class under that flag is vessels this registry holds no type classification for (830 ships), and the median vessel measures 2,293 GT. Browse every ship flagged Russia.
Narrowing to both dimensions at once, this registry holds 69 research / surveys flying the Russia flag, of which 8 are larger by tonnage.
Sibir was built in 1977, making it 49 years old. It is one of 1,791 hulls in this registry delivered that year, a cohort whose median tonnage is 5,622 GT; within it this ship is the 202nd largest. Across the whole of the 1970s the registry holds 17,331 vessels, median 2,774 GT. The median build year across the entire registry is 1995.
The registry attributes 43 vessels to Baltic Shipyard, with a median tonnage of 20,646 GT, delivered between 1960 and 2022. See the rest of that yard’s output.
At 148.9 m overall, Sibir is 77.9 m longer than the 71.0 m median for research / surveys on record, with a beam of 29.9 m and a draft of 11.0 m.
IMO numbers are issued in broadly chronological blocks. Within 500 either side of 7604491 this registry holds 26 other vessels, whose median build year is 1977 and which range from 1973 to 1983. That places this hull’s registration in the same part of the series, consistent with its recorded build year of 1977.
Its IMO number, 7604491, carries its own check digit. The first six digits are weighted seven down to two and summed — 7×7 + 6×6 + 0×5 + 4×4 + 4×3 + 9×2 = 131 — and the last digit of that total, 1, must equal the seventh digit, 1. It does, so this number is well formed.
