Manta

At 3,164 gross tons, Manta is the 50,982nd 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 1.9 times smaller than the typical vessel on record here. The largest measures 499,167 GT.

Among the 1,471 tugs held here, it ranks 55th by tonnage — larger than 96% of that group. Their median tonnage is 393 GT, and the largest tenth begin at 1,733 GT. The flag most often flown by this group is United States (239 ships). The yard that appears most often against it is Damen Shipyards Gorinchem, with 62 hulls on record.

Belgium is the country of registry for 258 vessels in this directory, of which Manta is the 101st largest by tonnage. The most common class under that flag is vessels this registry holds no type classification for (191 ships), and the median vessel measures 2,462 GT. Browse every ship flagged Belgium.

Narrowing to both dimensions at once, this registry holds 12 tugs flying the Belgium flag, of which none is larger than Manta.

Manta was built in 2003, making it 23 years old. It is one of 1,383 hulls in this registry delivered that year, a cohort whose median tonnage is 11,954 GT; within it this ship is the 904th largest. Across the whole of the 2000s the registry holds 18,605 vessels, median 9,957 GT. The median build year across the entire registry is 1995.

The registry attributes 162 vessels to Orskov Yard, with a median tonnage of 2,071 GT, delivered between 1962 and 2003. See the rest of that yard’s output.

At 75.0 m overall, Manta is 42.7 m longer than the 32.3 m median for tugs on record.

IMO numbers are issued in broadly chronological blocks. Within 500 either side of 9261487 this registry holds 65 other vessels, whose median build year is 2003 and which range from 2001 to 2005. That places this hull’s registration in the same part of the series, consistent with its recorded build year of 2003.

Its IMO number, 9261487, carries its own check digit. The first six digits are weighted seven down to two and summed — 9×7 + 2×6 + 6×5 + 1×4 + 4×3 + 8×2 = 137 — and the last digit of that total, 7, must equal the seventh digit, 7. It does, so this number is well formed.