ありあけ

At 7,268 gross tons, ありあけ is the 39,828th 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 1.2 times the typical vessel on record here. The largest measures 499,167 GT.

Among the 1,234 ferrys held here, it ranks 336th by tonnage — larger than 62% of that group. Their median tonnage is 3,908 GT, and the largest tenth begin at 25,454 GT. The flag most often flown by this group is Japan (241 ships). The yard that appears most often against it is Mitsubishi Heavy Industries, with 34 hulls on record.

Japan is the country of registry for 2,663 vessels in this directory, of which ありあけ is the 520th 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 241 ferrys flying the Japan flag, of which 103 are larger by tonnage.

ありあけ was built in 1986, making it 40 years old. It is one of 866 hulls in this registry delivered that year, a cohort whose median tonnage is 4,769 GT; within it this ship is the 367th largest. Across the whole of the 1980s the registry holds 13,213 vessels, median 3,004 GT. The median build year across the entire registry is 1995.

At 147.5 m overall, ありあけ is 43.5 m longer than the 104.0 m median for ferrys on record.

IMO numbers are issued in broadly chronological blocks. Within 500 either side of 8517396 this registry holds 23 other vessels, whose median build year is 1987 and which range from 1985 to 1988. That places this hull’s registration in the same part of the series, consistent with its recorded build year of 1986.

Its IMO number, 8517396, carries its own check digit. The first six digits are weighted seven down to two and summed — 8×7 + 5×6 + 1×5 + 7×4 + 3×3 + 9×2 = 146 — and the last digit of that total, 6, must equal the seventh digit, 6. It does, so this number is well formed.