Jotun A

At 65,420 gross tons, Jotun A is the 7,016th 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 11 times the typical vessel on record here. The largest measures 499,167 GT.

Among the 911 rig / offshore units held here, it ranks 36th by tonnage — larger than 96% 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 Jotun A is the 149th 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 3 are larger by tonnage.

Jotun A was built in 1999, making it 27 years old. It is one of 1,252 hulls in this registry delivered that year, a cohort whose median tonnage is 8,594 GT; within it this ship is the 101st largest. Across the whole of the 1990s the registry holds 12,006 vessels, median 4,956 GT. The median build year across the entire registry is 1995.

The registry attributes 46 vessels to Kvaerner Masa-Yards, with a median tonnage of 70,367 GT, delivered between 1990 and 2004. See the rest of that yard’s output.

At 232.0 m overall, Jotun A is 158.0 m longer than the 74.0 m median for rig / offshore units on record.

IMO numbers are issued in broadly chronological blocks. Within 500 either side of 9186168 this registry holds 59 other vessels, whose median build year is 1999 and which range from 1997 to 2005. That places this hull’s registration in the same part of the series, consistent with its recorded build year of 1999.

Its IMO number, 9186168, carries its own check digit. The first six digits are weighted seven down to two and summed — 9×7 + 1×6 + 8×5 + 6×4 + 1×3 + 6×2 = 148 — and the last digit of that total, 8, must equal the seventh digit, 8. It does, so this number is well formed.