HMS Hero

At 91,373 gross tons, HMS Hero is the 4,464th 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 15 times the typical vessel on record here. The largest measures 499,167 GT.

Among the 611 naval / patrols held here, it ranks 1st by tonnage — larger than 100% of that group. Their median tonnage is 1,325 GT, and the largest tenth begin at 23,606 GT. The flag most often flown by this group is United States (136 ships). The yard that appears most often against it is Austal, with 33 hulls on record.

HMS Hero was built in 2010, making it 16 years old. It is one of 3,028 hulls in this registry delivered that year, a cohort whose median tonnage is 20,204 GT; within it this ship is the 270th largest. Across the whole of the 2010s the registry holds 20,111 vessels, median 23,456 GT. The median build year across the entire registry is 1995.

The registry attributes 21 vessels to Vickers-Armstrongs, with a median tonnage of 12,653 GT, delivered between 1931 and 2010. See the rest of that yard’s output.

At 98.5 m overall, HMS Hero is 11.9 m longer than the 86.5 m median for naval / patrols on record, with a beam of 10.1 m and a draft of 3.8 m.

IMO numbers are issued in broadly chronological blocks. Within 500 either side of 9446867 this registry holds 69 other vessels, whose median build year is 2009 and which range from 2002 to 2022. That places this hull’s registration in the same part of the series, consistent with its recorded build year of 2010.

Its IMO number, 9446867, carries its own check digit. The first six digits are weighted seven down to two and summed — 9×7 + 4×6 + 4×5 + 6×4 + 8×3 + 6×2 = 167 — and the last digit of that total, 7, must equal the seventh digit, 7. It does, so this number is well formed.