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Open data · every figure carries its source

Largest in this registry
#26,273
of 84,014 with a recorded tonnage
Largest research / survey
#13
of 483 of this type with a recorded tonnage
Fleet rank
—
No operator attributed to this ship
In brief
Ramform Titan is a marine seismic acquisition vessel built in 2013 by the MHI shipyard in Nagasaki, Japan. Its width at the stern is 70 m (230 ft), making it the widest class of single-hulled ships in the world (NN Nanny previously exceeded this with a beam of 79 m before being broken up in 2003).
The Ramform class of ships was developed by PGS, before the company merged with TGS in 2024. PGS built three other Titan-class vessels after Ramform Titan: Ramform Atlas, Ramform Hyperion, and Ramform Tethys.
Vessel particulars
Every value is as recorded in the source. Blanks are values the source does not hold — none is estimated from a sister ship or a class average.
Identification
Construction
Measurements
In context
Every figure in this section is a count, a rank or a percentile over vessels actually held in this registry — not over the world fleet, which is larger. Nothing here is estimated.
At 20,637 gross tons, Ramform Titan is the 26,273rd 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 the typical vessel on record here. The largest measures 499,167 GT.
Among the 612 research / surveys held here, it ranks 13th by tonnage — larger than 98% 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.
The Bahamas is the country of registry for 1,614 vessels in this directory, of which Ramform Titan is the 1,009th largest by tonnage. The most common class under that flag is vessels this registry holds no type classification for (940 ships), and the median vessel measures 30,020 GT. Browse every ship flagged The Bahamas.
Narrowing to both dimensions at once, this registry holds 13 research / surveys flying the The Bahamas flag, of which 1 is larger by tonnage.
Ramform Titan was built in 2013, making it 13 years old. It is one of 2,213 hulls in this registry delivered that year, a cohort whose median tonnage is 22,566 GT; within it this ship is the 1,100th largest. Across the whole of the 2010s the registry holds 20,111 vessels, median 23,456 GT. The median build year across the entire registry is 1995.
The registry attributes 117 vessels to Mitsubishi Heavy Industries Nagasaki Shipyard & Machinery, with a median tonnage of 61,321 GT, delivered between 1955 and 2021. See the rest of that yard’s output.
At 104.2 m overall, Ramform Titan is 33.2 m longer than the 71.0 m median for research / surveys on record, with a beam of 70.0 m and a draft of 6.4 m.
IMO numbers are issued in broadly chronological blocks. Within 500 either side of 9629885 this registry holds 68 other vessels, whose median build year is 2013 and which range from 2011 to 2017. That places this hull’s registration in the same part of the series, consistent with its recorded build year of 2013.
Its IMO number, 9629885, carries its own check digit. The first six digits are weighted seven down to two and summed — 9×7 + 6×6 + 2×5 + 9×4 + 8×3 + 8×2 = 185 — and the last digit of that total, 5, must equal the seventh digit, 5. It does, so this number is well formed.
Nearest by tonnage among research / surveys
| Ship | Built | Gross tonnage |
|---|---|---|
| Sibir | 1977 | 20,665 |
| Yamal | 1992 | 20,646 |
| Sovetskiy Soyuz | 1989 | 20,646 |
| Ramform Titan (this ship) | 2013 | 20,637 |
| Viktor Chernomyrdin | 2019 | 20,431 |
| RSV Nuyina | 2018 | 20,200 |
| MV Arctic |
Provenance
Vessel recordWikidata, released under CC0, keyed on this ship’s IMO number.
Written summaryQuoted from Ramform Titan on English Wikipedia, reused under CC BY-SA 4.0.
PhotographBy kees torn, reused under CC BY-SA 2.0.
| 1978 |
| 19,420 |