Petrobras 77

At 159,333 gross tons, Petrobras 77 is the 937th 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 27 times the typical vessel on record here. The largest measures 499,167 GT.

Among the 2,402 tankers held here, it ranks 16th by tonnage — larger than 99% of that group. Their median tonnage is 8,256 GT, and the largest tenth begin at 42,340 GT. The flag most often flown by this group is Panama (219 ships). The yard that appears most often against it is HD Hyundai Mipo, with 175 hulls on record.

Liberia is the country of registry for 4,741 vessels in this directory, of which Petrobras 77 is the 109th largest by tonnage. The most common class under that flag is vessels this registry holds no type classification for (2,739 ships), and the median vessel measures 32,983 GT. Browse every ship flagged Liberia.

Narrowing to both dimensions at once, this registry holds 152 tankers flying the Liberia flag, of which 1 is larger by tonnage.

Petrobras 77 was built in 1991, making it 35 years old. It is one of 1,166 hulls in this registry delivered that year, a cohort whose median tonnage is 2,997 GT; within it this ship is the 1st 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 1,480 vessels to HD Hyundai Mipo, with a median tonnage of 29,375 GT, delivered between 1979 and 2025. See the rest of that yard’s output.

At 322.0 m overall, Petrobras 77 is 183.0 m longer than the 139.0 m median for tankers on record.

IMO numbers are issued in broadly chronological blocks. Within 500 either side of 8906913 this registry holds 79 other vessels, whose median build year is 1991 and which range from 1989 to 1996. That places this hull’s registration in the same part of the series, consistent with its recorded build year of 1991.

Its IMO number, 8906913, carries its own check digit. The first six digits are weighted seven down to two and summed — 8×7 + 9×6 + 0×5 + 6×4 + 9×3 + 1×2 = 163 — and the last digit of that total, 3, must equal the seventh digit, 3. It does, so this number is well formed.