USCGC Penobscot Bay

At 500 gross tons, USCGC Penobscot Bay is the 73,179th 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 12 times smaller than the typical vessel on record here. The largest measures 499,167 GT.

Among the 1,471 tugs held here, it ranks 493rd by tonnage — larger than 61% of that group. Their median tonnage is 393 GT, and the largest tenth begin at 1,733 GT. The flag most often flown by this group is United States (239 ships). The yard that appears most often against it is Damen Shipyards Gorinchem, with 62 hulls on record.

United States is the country of registry for 2,278 vessels in this directory, of which USCGC Penobscot Bay is the 1,191st 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 239 tugs flying the United States flag, of which 77 are larger by tonnage.

USCGC Penobscot Bay 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 1,107th 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 2 vessels to Bay City Marine Incorporated, with a median tonnage of 500 GT, delivered between 1985 and 1988. See the rest of that yard’s output.

At 42.7 m overall, USCGC Penobscot Bay is 10.4 m longer than the 32.3 m median for tugs on record, with a beam of 37.5 m and a draft of 12.5 m.

IMO numbers are issued in broadly chronological blocks. Within 500 either side of 8635186 this registry holds 26 other vessels, whose median build year is 1962 and which range from 1907 to 1993. That places this hull’s registration in the same part of the series, consistent with its recorded build year of 1985.

Its IMO number, 8635186, carries its own check digit. The first six digits are weighted seven down to two and summed — 8×7 + 6×6 + 3×5 + 5×4 + 1×3 + 8×2 = 146 — and the last digit of that total, 6, must equal the seventh digit, 6. It does, so this number is well formed.