Petrobras 31

At 138,533 gross tons, Petrobras 31 is the 1,779th 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 58,086 vessels this registry holds no type classification for held here, it ranks 864th by tonnage — larger than 98% of that group. Their median tonnage is 5,358 GT, and the largest tenth begin at 54,309 GT. The flag most often flown by this group is Panama (5,698 ships). The yard that appears most often against it is HD Hyundai Mipo, with 615 hulls on record.

Panama is the country of registry for 9,598 vessels in this directory, of which Petrobras 31 is the 277th 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 5,698 vessels this registry holds no type classification for flying the Panama flag, of which 122 are larger by tonnage.

Petrobras 31 was built in 1974, making it 52 years old. It is one of 2,111 hulls in this registry delivered that year, a cohort whose median tonnage is 1,681 GT; within it this ship is the 16th 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 337.0 m overall, Petrobras 31 is 222.0 m longer than the 115.0 m median for vessels this registry holds no type classification for on record.

IMO numbers are issued in broadly chronological blocks. Within 500 either side of 7351800 this registry holds 48 other vessels, whose median build year is 1974 and which range from 1973 to 1978. That places this hull’s registration in the same part of the series, consistent with its recorded build year of 1974.

Its IMO number, , carries its own check digit. The first six digits are weighted seven down to two and summed — = 120 — and the last digit of that total, 0, must equal the seventh digit, 0. It does, so this number is well formed.