Prinses Irene

At 8,533 gross tons, Prinses Irene is the 38,131st 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 1.4 times the typical vessel on record here. The largest measures 499,167 GT.

Among the 617 passenger vessels held here, it ranks 56th by tonnage — larger than 89% of that group. Their median tonnage is 909 GT, and the largest tenth begin at 9,718 GT. The flag most often flown by this group is Egypt (65 ships). The yard that appears most often against it is Meyer Werft, with 16 hulls on record.

Prinses Irene was built in 1959, making it 67 years old. It is one of 245 hulls in this registry delivered that year, a cohort whose median tonnage is 517 GT; within it this ship is the 14th largest. Across the whole of the 1950s the registry holds 2,005 vessels, median 960 GT. The median build year across the entire registry is 1995.

The registry attributes 18 vessels to De Merwede, with a median tonnage of 4,501 GT, delivered between 1949 and 2004. See the rest of that yard’s output.

At 138.9 m overall, Prinses Irene is 77.9 m longer than the 61.0 m median for passenger vessels on record.

IMO numbers are issued in broadly chronological blocks. Within 500 either side of 5285332 this registry holds 23 other vessels, whose median build year is 1954 and which range from 1922 to 1961. That places this hull’s registration in the same part of the series, consistent with its recorded build year of 1959.

Its IMO number, 5285332, carries its own check digit. The first six digits are weighted seven down to two and summed — 5×7 + 2×6 + 8×5 + 5×4 + 3×3 + 3×2 = 122 — and the last digit of that total, 2, must equal the seventh digit, 2. It does, so this number is well formed.