At 136,709 gross tons, Thialf is the 1,833rd 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 23 times the typical vessel on record here. The largest measures 499,167 GT.
Among the 911 rig / offshore units held here, it ranks 14th by tonnage — larger than 98% 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.
Panama is the country of registry for 9,598 vessels in this directory, of which Thialf is the 284th largest by tonnage. The most common class under that flag is vessels this registry holds no type classification for (5,698 ships), and the median vessel measures 18,203 GT. Browse every ship flagged Panama.
Narrowing to both dimensions at once, this registry holds 107 rig / offshore units flying the Panama flag, of which 3 are larger by tonnage.
Thialf was built in 1985, making it 41 years old. It is one of 1,312 hulls in this registry delivered that year, a cohort whose median tonnage is 4,782 GT; within it this ship is the 2nd 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 53 vessels to Mitsui Engineering & Shipbuilding, with a median tonnage of 31,820 GT, delivered between 1970 and 2017. See the rest of that yard’s output.
At 201.6 m overall, Thialf is 127.6 m longer than the 74.0 m median for rig / offshore units on record, with a beam of 88.4 m and a draft of 31.6 m.
IMO numbers are issued in broadly chronological blocks. Within 500 either side of 8757740 this registry holds 30 other vessels, whose median build year is 1975 and which range from 1950 to 1987. That places this hull’s registration in the same part of the series, consistent with its recorded build year of 1985.
Its IMO number, 8757740, carries its own check digit. The first six digits are weighted seven down to two and summed — 8×7 + 7×6 + 5×5 + 7×4 + 7×3 + 4×2 = 180 — and the last digit of that total, 0, must equal the seventh digit, 0. It does, so this number is well formed.
