Alborz

At 111,541 gross tons, Alborz is the 2,611th 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 19 times the typical vessel on record here. The largest measures 499,167 GT.

Among the 3,060 oil tankers held here, it ranks 344th by tonnage — larger than 88% 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.

Iran is the country of registry for 422 vessels in this directory, of which Alborz is the 31st largest by tonnage. The most common class under that flag is vessels this registry holds no type classification for (245 ships), and the median vessel measures 4,793 GT. Browse every ship flagged Iran.

Narrowing to both dimensions at once, this registry holds 28 oil tankers flying the Iran flag, of which 11 are larger by tonnage.

Alborz was built in 1978, making it 48 years old. It is one of 1,698 hulls in this registry delivered that year, a cohort whose median tonnage is 3,556 GT; within it this ship is the 11th largest. Across the whole of the 1970s the registry holds 17,331 vessels, median 2,774 GT. The median build year across the entire registry is 1995.

At 329.0 m overall, Alborz is 150.0 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 7365758 this registry holds 56 other vessels, whose median build year is 1976 and which range from 1974 to 1980. That places this hull’s registration in the same part of the series, consistent with its recorded build year of 1978.

Its IMO number, 7365758, carries its own check digit. The first six digits are weighted seven down to two and summed — 7×7 + 3×6 = 148 — and the last digit of that total, 8, must equal the seventh digit, 8. It does, so this number is well formed.