Isemaru

At 7,042 gross tons, Isemaru is the 40,218th 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 344th by tonnage — larger than 61% 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 Isemaru is the 523rd 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 105 are larger by tonnage.

Isemaru was built in 1973, making it 53 years old. It is one of 2,097 hulls in this registry delivered that year, a cohort whose median tonnage is 1,435 GT; within it this ship is the 596th 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.

The registry attributes 13 vessels to Hayashi Kanesen, with a median tonnage of 8,901 GT, delivered between 1958 and 1995. See the rest of that yard’s output.

At 140.9 m overall, Isemaru is 36.9 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 7319553 this registry holds 60 other vessels, whose median build year is 1973 and which range from 1959 to 1975. That places this hull’s registration in the same part of the series, consistent with its recorded build year of 1973.

Its IMO number, 7319553, carries its own check digit. The first six digits are weighted seven down to two and summed — 7×7 + 3×6 + 1×5 + 9×4 + 5×3 + 5×2 = 133 — and the last digit of that total, 3, must equal the seventh digit, 3. It does, so this number is well formed.