USCGC Healy

At 15,150 gross tons, USCGC Healy is the 30,832nd 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 2.5 times the typical vessel on record here. The largest measures 499,167 GT.

Among the 612 research / surveys held here, it ranks 21st by tonnage — larger than 96% 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.

United States is the country of registry for 2,278 vessels in this directory, of which USCGC Healy is the 278th 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 90 research / surveys flying the United States flag, of which none is larger than USCGC Healy.

USCGC Healy was built in 1999, making it 27 years old. It is one of 1,252 hulls in this registry delivered that year, a cohort whose median tonnage is 8,594 GT; within it this ship is the 471st largest. Across the whole of the 1990s the registry holds 12,006 vessels, median 4,956 GT. The median build year across the entire registry is 1995.

The registry attributes 59 vessels to Avondale Shipyard, with a median tonnage of 25,742 GT, delivered between 1945 and 2006. See the rest of that yard’s output.

At 128.0 m overall, USCGC Healy is 57.0 m longer than the 71.0 m median for research / surveys on record, with a beam of 25.0 m and a draft of 8.9 m.

IMO numbers are issued in broadly chronological blocks. Within 500 either side of 9083380 this registry holds 46 other vessels, whose median build year is 1994 and which range from 1992 to 1999. That places this hull’s registration in the same part of the series, consistent with its recorded build year of 1999.

Its IMO number, 9083380, carries its own check digit. The first six digits are weighted seven down to two and summed — 9×7 + 0×6 + 8×5 + 3×4 + 3×3 + 8×2 = 140 — and the last digit of that total, 0, must equal the seventh digit, 0. It does, so this number is well formed.