Birchglen

At 22,388 gross tons, Birchglen is the 25,197th 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 3.7 times the typical vessel on record here. The largest measures 499,167 GT.

Among the 6,242 general cargos held here, it ranks 165th by tonnage — larger than 97% of that group. Their median tonnage is 2,963 GT, and the largest tenth begin at 10,970 GT. The flag most often flown by this group is Panama (565 ships). The yard that appears most often against it is Cestné a Stavebné Mechanizmy Tisovec, with 137 hulls on record.

Birchglen was built in 1983, making it 43 years old. It is one of 1,578 hulls in this registry delivered that year, a cohort whose median tonnage is 3,112 GT; within it this ship is the 241st 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 222.5 m overall, Birchglen is 121.5 m longer than the 101.0 m median for general cargos on record.

IMO numbers are issued in broadly chronological blocks. Within 500 either side of 8119273 this registry holds 45 other vessels, whose median build year is 1983 and which range from 1981 to 1985. That places this hull’s registration in the same part of the series, consistent with its recorded build year of 1983.

Its IMO number, 8119273, carries its own check digit. The first six digits are weighted seven down to two and summed — 8×7 + 1×6 + 1×5 + 9×4 + 2×3 + 7×2 = 123 — and the last digit of that total, 3, must equal the seventh digit, 3. It does, so this number is well formed.