USNS Assertive

At 2,060 gross tons, USNS Assertive is the 57,457th 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 2.9 times smaller than 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 32,559th by tonnage — larger than 34% 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.

United States is the country of registry for 2,278 vessels in this directory, of which USNS Assertive is the 698th largest by tonnage. The most common class under that flag is vessels this registry holds no type classification for (977 ships), and the median vessel measures 1,706 GT. Browse every ship flagged United States.

Narrowing to both dimensions at once, this registry holds 977 vessels this registry holds no type classification for flying the United States flag, of which 222 are larger by tonnage.

USNS Assertive was built in 1986, making it 40 years old. It is one of 866 hulls in this registry delivered that year, a cohort whose median tonnage is 4,769 GT; within it this ship is the 528th 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.

The registry attributes 17 vessels to Tacoma Boatbuilding Company, with a median tonnage of 1,751 GT, delivered between 1946 and 1991. See the rest of that yard’s output.

At 68.3 m overall, USNS Assertive is 46.7 m shorter than the 115.0 m median for vessels this registry holds no type classification for on record, with a beam of 43.0 m and a draft of 15.0 m.

IMO numbers are issued in broadly chronological blocks. Within 500 either side of 8835504 this registry holds 48 other vessels, whose median build year is 1984 and which range from 1944 to 1990. That places this hull’s registration in the same part of the series, consistent with its recorded build year of 1986.

Its IMO number, 8835504, carries its own check digit. The first six digits are weighted seven down to two and summed — 8×7 + 8×6 + 3×5 + 5×4 + 5×3 + 0×2 = 154 — and the last digit of that total, 4, must equal the seventh digit, 4. It does, so this number is well formed.