USNS PFC Dewayne T. Williams

At 44,543 gross tons, USNS PFC Dewayne T. Williams is the 11,116th 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 7.4 times the typical vessel on record here. The largest measures 499,167 GT.

Among the 6,242 general cargos held here, it ranks 28th by tonnage — larger than 99% of that group. Their median tonnage is 2,963 GT, and the largest tenth begin at 10,970 GT. The flag most often flown by this group is Panama (565 ships). The yard that appears most often against it is Cestné a Stavebné Mechanizmy Tisovec, with 137 hulls on record.

United States is the country of registry for 2,278 vessels in this directory, of which USNS PFC Dewayne T. Williams is the 100th 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 121 general cargos flying the United States flag, of which 15 are larger by tonnage.

USNS PFC Dewayne T. Williams was built in 1985, making it 41 years old. It is one of 1,312 hulls in this registry delivered that year, a cohort whose median tonnage is 4,782 GT; within it this ship is the 72nd 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 12 vessels to Fore River Shipyard, with a median tonnage of 44,543 GT, delivered between 1932 and 1985. See the rest of that yard’s output.

At 205.0 m overall, USNS PFC Dewayne T. Williams is 104.0 m longer than the 101.0 m median for general cargos on record, with a beam of 106.0 m and a draft of 29.0 m.

IMO numbers are issued in broadly chronological blocks. Within 500 either side of 8219396 this registry holds 31 other vessels, whose median build year is 1984 and which range from 1982 to 2003. That places this hull’s registration in the same part of the series, consistent with its recorded build year of 1985.

Its IMO number, 8219396, carries its own check digit. The first six digits are weighted seven down to two and summed — 8×7 + 2×6 + 1×5 + 9×4 + 3×3 + 9×2 = 136 — and the last digit of that total, 6, must equal the seventh digit, 6. It does, so this number is well formed.