Discoverer Spirit

At 63,190 gross tons, Discoverer Spirit is the 7,346th 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 38th by tonnage — larger than 95% 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.

Marshall Islands is the country of registry for 3,838 vessels in this directory, of which Discoverer Spirit is the 713th largest by tonnage. The most common class under that flag is vessels this registry holds no type classification for (2,407 ships), and the median vessel measures 32,987 GT. Browse every ship flagged Marshall Islands.

Narrowing to both dimensions at once, this registry holds 117 rig / offshore units flying the Marshall Islands flag, of which 4 are larger by tonnage.

Discoverer Spirit 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 106th 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.

At 254.0 m overall, Discoverer Spirit is 180.0 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 9212797 this registry holds 69 other vessels, whose median build year is 2000 and which range from 1999 to 2004. That places this hull’s registration in the same part of the series, consistent with its recorded build year of 1999.

Its IMO number, 9212797, carries its own check digit. The first six digits are weighted seven down to two and summed — = 127 — and the last digit of that total, 7, must equal the seventh digit, 7. It does, so this number is well formed.