At 1,751 gross tons, USNS Stalwart is the 59,553rd 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 3.4 times smaller than the typical vessel on record here. The largest measures 499,167 GT.
Among the 612 research / surveys held here, it ranks 277th by tonnage — larger than 43% of that group. Their median tonnage is 2,180 GT, and the largest tenth begin at 9,452 GT. The flag most often flown by this group is United States (90 ships). The yard that appears most often against it is Wärtsilä, with 36 hulls on record.
Vanuatu is the country of registry for 425 vessels in this directory, of which USNS Stalwart is the 271st largest by tonnage. The most common class under that flag is vessels this registry holds no type classification for (208 ships), and the median vessel measures 2,446 GT. Browse every ship flagged Vanuatu.
USNS Stalwart was built in 1984, making it 42 years old. It is one of 1,492 hulls in this registry delivered that year, a cohort whose median tonnage is 4,366 GT; within it this ship is the 993rd 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 Stalwart is 2.7 m shorter than the 71.0 m median for research / surveys 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 8835516 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 1984.
Its IMO number, 8835516, 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 + 1×2 = 156 — and the last digit of that total, 6, must equal the seventh digit, 6. It does, so this number is well formed.
