HMAS Jervis Bay

At 7,005 gross tons, HMAS Jervis Bay is the 40,258th 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 1.2 times the typical vessel on record here. The largest measures 499,167 GT.

Among the 58,086 vessels this registry holds no type classification for held here, it ranks 23,057th by tonnage — larger than 54% of that group. Their median tonnage is 5,358 GT, and the largest tenth begin at 54,309 GT. The flag most often flown by this group is Panama (5,698 ships). The yard that appears most often against it is HD Hyundai Mipo, with 615 hulls on record.

HMAS Jervis Bay was built in 1969, making it 57 years old. It is one of 814 hulls in this registry delivered that year, a cohort whose median tonnage is 992 GT; within it this ship is the 73rd largest. Across the whole of the 1960s the registry holds 4,074 vessels, median 844 GT. The median build year across the entire registry is 1995.

The registry attributes 7 vessels to State Dockyard, with a median tonnage of 1,184 GT, delivered between 1959 and 1983. See the rest of that yard’s output.

At 138.2 m overall, HMAS Jervis Bay is 23.2 m longer than the 115.0 m median for vessels this registry holds no type classification for on record, with a beam of 21.5 m and a draft of 6.1 m.

IMO numbers are issued in broadly chronological blocks. Within 500 either side of 6910427 this registry holds 9 other vessels, whose median build year is 1969 and which range from 1967 to 1978. That places this hull’s registration in the same part of the series, consistent with its recorded build year of 1969.

Its IMO number, 6910427, carries its own check digit. The first six digits are weighted seven down to two and summed — 6×7 + 9×6 + 1×5 + 0×4 + 4×3 + 2×2 = 117 — and the last digit of that total, 7, must equal the seventh digit, 7. It does, so this number is well formed.