Aiko Maru

At 209,788 gross tons, Aiko Maru is the 121st 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 35 times the typical vessel on record here. The largest measures 499,167 GT.

Among the 3,060 oil tankers held here, it ranks 4th by tonnage — larger than 100% of that group. Their median tonnage is 22,184 GT, and the largest tenth begin at 149,274 GT. The flag most often flown by this group is Panama (301 ships). The yard that appears most often against it is HD Hyundai Mipo, with 190 hulls on record.

Aiko Maru was built in 1976, making it 50 years old. It is one of 1,812 hulls in this registry delivered that year, a cohort whose median tonnage is 4,484 GT; within it this ship is the 3rd 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 117 vessels to Mitsubishi Heavy Industries Nagasaki Shipyard & Machinery, with a median tonnage of 61,321 GT, delivered between 1955 and 2021. See the rest of that yard’s output.

At 365.9 m overall, Aiko Maru is 186.9 m longer than the 179.0 m median for oil tankers on record and a draft of 22.9 m.

IMO numbers are issued in broadly chronological blocks. Within 500 either side of 7377000 this registry holds 32 other vessels, whose median build year is 1975 and which range from 1974 to 1977. That places this hull’s registration in the same part of the series, consistent with its recorded build year of 1976.

Its IMO number, 7377000, carries its own check digit. The first six digits are weighted seven down to two and summed — 7×7 + 3×6 + 7×5 + 7×4 + 0×3 + 0×2 = 130 — and the last digit of that total, 0, must equal the seventh digit, 0. It does, so this number is well formed.