At 71,058 gross tons, Alvheim is the 6,545th 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 12 times the typical vessel on record here. The largest measures 499,167 GT.
Among the 911 rig / offshore units held here, it ranks 27th by tonnage — larger than 97% of that group. Their median tonnage is 9,254 GT, and the largest tenth begin at 51,732 GT. The flag most often flown by this group is Liberia (179 ships). The yard that appears most often against it is Hanwha Ocean, with 27 hulls on record.
Norway is the country of registry for 3,032 vessels in this directory, of which Alvheim is the 122nd largest by tonnage. The most common class under that flag is vessels this registry holds no type classification for (2,126 ships), and the median vessel measures 3,102 GT. Browse every ship flagged Norway.
Narrowing to both dimensions at once, this registry holds 21 rig / offshore units flying the Norway flag, of which 2 are larger by tonnage.
Alvheim was built in 2001, making it 25 years old. It is one of 1,268 hulls in this registry delivered that year, a cohort whose median tonnage is 14,062 GT; within it this ship is the 101st largest. Across the whole of the 2000s the registry holds 18,605 vessels, median 9,957 GT. The median build year across the entire registry is 1995.
The registry attributes 5 vessels to IZAR, with a median tonnage of 17,370 GT, delivered between 2001 and 2004. See the rest of that yard’s output.
At 252.3 m overall, Alvheim is 178.3 m longer than the 74.0 m median for rig / offshore units on record, with a beam of 42.0 m and a draft of 15.8 m.
IMO numbers are issued in broadly chronological blocks. Within 500 either side of 9170078 this registry holds 23 other vessels, whose median build year is 1998 and which range from 1997 to 2001. That places this hull’s registration in the same part of the series, consistent with its recorded build year of 2001.
Its IMO number, 9170078, carries its own check digit. The first six digits are weighted seven down to two and summed — 9×7 + 1×6 + 7×5 + 0×4 + 0×3 + 7×2 = 118 — and the last digit of that total, 8, must equal the seventh digit, 8. It does, so this number is well formed.
