JCG Amagi

At 1,325 gross tons, JCG Amagi is the 63,049th 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 4.5 times smaller than the typical vessel on record here. The largest measures 499,167 GT.

Among the 611 naval / patrols held here, it ranks 134th by tonnage — larger than 50% of that group. Their median tonnage is 1,325 GT, and the largest tenth begin at 23,606 GT. The flag most often flown by this group is United States (136 ships). The yard that appears most often against it is Austal, with 33 hulls on record.

Japan is the country of registry for 2,663 vessels in this directory, of which JCG Amagi is the 1,052nd largest by tonnage. The most common class under that flag is vessels this registry holds no type classification for (1,534 ships), and the median vessel measures 764 GT. Browse every ship flagged Japan.

Narrowing to both dimensions at once, this registry holds 66 naval / patrols flying the Japan flag, of which 27 are larger by tonnage.

JCG Amagi was built in 2010, making it 16 years old. It is one of 3,028 hulls in this registry delivered that year, a cohort whose median tonnage is 20,204 GT; within it this ship is the 2,635th largest. Across the whole of the 2010s the registry holds 20,111 vessels, median 23,456 GT. The median build year across the entire registry is 1995.

The registry attributes 230 vessels to Mitsui Tamano Shipyard, with a median tonnage of 31,228 GT, delivered between 1950 and 2024. See the rest of that yard’s output.

At 89.0 m overall, JCG Amagi is 2.5 m longer than the 86.5 m median for naval / patrols on record.

IMO numbers are issued in broadly chronological blocks. Within 500 either side of 9589891 this registry holds 67 other vessels, whose median build year is 2011 and which range from 2006 to 2014. That places this hull’s registration in the same part of the series, consistent with its recorded build year of 2010.

Its IMO number, 9589891, carries its own check digit. The first six digits are weighted seven down to two and summed — 9×7 + 5×6 + 8×5 + 9×4 + 8×3 + 9×2 = 211 — and the last digit of that total, 1, must equal the seventh digit, 1. It does, so this number is well formed.