RV Marcus G. Langseth

At 3,834 gross tons, RV Marcus G. Langseth is the 48,525th 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 1.6 times smaller than the typical vessel on record here. The largest measures 499,167 GT.

Among the 612 research / surveys held here, it ranks 153rd by tonnage — larger than 68% 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 RV Marcus G. Langseth is the 485th 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 12 are larger by tonnage.

RV Marcus G. Langseth was built in 1991, making it 35 years old. It is one of 1,166 hulls in this registry delivered that year, a cohort whose median tonnage is 2,997 GT; within it this ship is the 496th 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 105 vessels to Ulstein Verft, with a median tonnage of 4,157 GT, delivered between 1959 and 2021. See the rest of that yard’s output.

At 71.5 m overall, RV Marcus G. Langseth is within a metre of the 71.0 m median length for research / surveys on record, with a beam of 17.0 m and a draft of 5.9 m.

IMO numbers are issued in broadly chronological blocks. Within 500 either side of 9010137 this registry holds 69 other vessels, whose median build year is 1990 and which range from 1989 to 2017. That places this hull’s registration in the same part of the series, consistent with its recorded build year of 1991.

Its IMO number, 9010137, carries its own check digit. The first six digits are weighted seven down to two and summed — 9×7 + 0×6 + 1×5 + 0×4 + 1×3 + 3×2 = 77 — and the last digit of that total, 7, must equal the seventh digit, 7. It does, so this number is well formed.