At 551 gross tons, HMNZS Rotoiti is the 72,533rd 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 11 times smaller than the typical vessel on record here. The largest measures 499,167 GT.
Among the 611 naval / patrols held here, it ranks 183rd by tonnage — larger than 31% 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.
New Zealand is the country of registry for 112 vessels in this directory, of which HMNZS Rotoiti is the 47th largest by tonnage. The most common class under that flag is vessels this registry holds no type classification for (64 ships), and the median vessel measures 551 GT. Browse every ship flagged New Zealand.
Narrowing to both dimensions at once, this registry holds 5 naval / patrols flying the New Zealand flag, of which none is larger than HMNZS Rotoiti.
HMNZS Rotoiti was built in 2007, making it 19 years old. It is one of 2,469 hulls in this registry delivered that year, a cohort whose median tonnage is 8,473 GT; within it this ship is the 2,117th largest. Across the whole of the 2000s the registry holds 18,605 vessels, median 9,957 GT. The median build year across the entire registry is 1995.
The registry attributes 3 vessels to Tenix Defence, with a median tonnage of 551 GT, delivered between 2007 and 2009. See the rest of that yard’s output.
At 55.0 m overall, HMNZS Rotoiti is 31.5 m shorter than the 86.5 m median for naval / patrols on record, with a beam of 9.0 m and a draft of 2.9 m.
IMO numbers are issued in broadly chronological blocks. Within 500 either side of 9368493 this registry holds 55 other vessels, whose median build year is 2007 and which range from 2005 to 2010. That places this hull’s registration in the same part of the series, consistent with its recorded build year of 2007.
Its IMO number, 9368493, carries its own check digit. The first six digits are weighted seven down to two and summed — 9×7 + 3×6 + 6×5 + 8×4 + 4×3 + 9×2 = 173 — and the last digit of that total, 3, must equal the seventh digit, 3. It does, so this number is well formed.
