Opal

At 25,525 gross tons, Opal is the 22,715th 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 4.3 times the typical vessel on record here. The largest measures 499,167 GT.

Among the 3,060 oil tankers held here, it ranks 1,402nd by tonnage — larger than 53% of that group. Their median tonnage is 22,184 GT, and the largest tenth begin at 149,274 GT. The flag most often flown by this group is Panama (301 ships). The yard that appears most often against it is HD Hyundai Mipo, with 190 hulls on record.

Indonesia is the country of registry for 2,700 vessels in this directory, of which Opal is the 189th largest by tonnage. The most common class under that flag is vessels this registry holds no type classification for (1,484 ships), and the median vessel measures 2,078 GT. Browse every ship flagged Indonesia.

Narrowing to both dimensions at once, this registry holds 185 oil tankers flying the Indonesia flag, of which 27 are larger by tonnage.

Opal was built in 1983, making it 43 years old. It is one of 1,578 hulls in this registry delivered that year, a cohort whose median tonnage is 3,112 GT; within it this ship is the 186th 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.

At 194.0 m overall, Opal is 15.0 m longer than the 179.0 m median for oil tankers on record.

IMO numbers are issued in broadly chronological blocks. Within 500 either side of 8025836 this registry holds 55 other vessels, whose median build year is 1982 and which range from 1980 to 1988. That places this hull’s registration in the same part of the series, consistent with its recorded build year of 1983.

Its IMO number, 8025836, carries its own check digit. The first six digits are weighted seven down to two and summed — 8×7 = 116 — and the last digit of that total, 6, must equal the seventh digit, 6. It does, so this number is well formed.