At 2,164 gross tons, Thorbjorn is the 56,867th 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 2.8 times smaller than the typical vessel on record here. The largest measures 499,167 GT.
Among the 612 research / surveys held here, it ranks 244th by tonnage — larger than 50% 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.
Denmark is the country of registry for 849 vessels in this directory, of which Thorbjorn is the 470th largest by tonnage. The most common class under that flag is vessels this registry holds no type classification for (495 ships), and the median vessel measures 4,678 GT. Browse every ship flagged Denmark.
Narrowing to both dimensions at once, this registry holds 8 research / surveys flying the Denmark flag, of which 2 are larger by tonnage.
Thorbjorn was built in 1980, making it 46 years old. It is one of 1,736 hulls in this registry delivered that year, a cohort whose median tonnage is 2,301 GT; within it this ship is the 772nd 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 45 vessels to Svendborg Skibsværft, with a median tonnage of 1,398 GT, delivered between 1931 and 1996. See the rest of that yard’s output.
At 65.0 m overall, Thorbjorn is 6.0 m shorter than the 71.0 m median for research / surveys on record.
IMO numbers are issued in broadly chronological blocks. Within 500 either side of 7904504 this registry holds 45 other vessels, whose median build year is 1980 and which range from 1979 to 1987. That places this hull’s registration in the same part of the series, consistent with its recorded build year of 1980.
Its IMO number, 7904504, carries its own check digit. The first six digits are weighted seven down to two and summed — 7×7 + 9×6 + 0×5 + 4×4 + 5×3 + 0×2 = 134 — and the last digit of that total, 4, must equal the seventh digit, 4. It does, so this number is well formed.
