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Open data · every figure carries its source

Largest in this registry
#41,867
of 84,014 with a recorded tonnage
Largest lng carrier
#238
of 250 of this type with a recorded tonnage
Largest in its fleet
#5
of 9 in this fleet with a recorded tonnage
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 6,051 gross tons, Sigmagas is the 41,867th largest of the 84,014 vessels in this registry that report a tonnage. The median across that set is 5,994 GT. The largest measures 499,167 GT.
Among the 270 lng carriers held here, it ranks 238th by tonnage — larger than 5% of that group. Their median tonnage is 105,826 GT, and the largest tenth begin at 128,416 GT. The flag most often flown by this group is Marshall Islands (37 ships). The yard that appears most often against it is Samsung Heavy Industries, with 39 hulls on record.
Antigua and Barbuda is the country of registry for 734 vessels in this directory, of which Sigmagas is the 382nd largest by tonnage. The most common class under that flag is vessels this registry holds no type classification for (372 ships), and the median vessel measures 6,351 GT. Browse every ship flagged Antigua and Barbuda.
Narrowing to both dimensions at once, this registry holds 6 lng carriers flying the Antigua and Barbuda flag, of which 1 is larger by tonnage.
Sigmagas was built in 1998, making it 28 years old. It is one of 1,367 hulls in this registry delivered that year, a cohort whose median tonnage is 7,381 GT; within it this ship is the 715th 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 1,092 vessels to HD Hyundai Heavy Industries, with a median tonnage of 65,131 GT, delivered between 1970 and 2025. See the rest of that yard’s output.
At 118.9 m overall, Sigmagas is 169.1 m shorter than the 288.0 m median for lng carriers on record and a draft of 7.7 m.
IMO numbers are issued in broadly chronological blocks. Within 500 either side of 9183568 this registry holds 63 other vessels, whose median build year is 1999 and which range from 1991 to 2001. That places this hull’s registration in the same part of the series, consistent with its recorded build year of 1998.
Its IMO number, 9183568, carries its own check digit. The first six digits are weighted seven down to two and summed — 9×7 + 1×6 + 8×5 + 3×4 + 5×3 + 6×2 = 148 — and the last digit of that total, 8, must equal the seventh digit, 8. It does, so this number is well formed.
Nearest by tonnage among lng carriers
| Ship | Built | Gross tonnage |
|---|---|---|
| Zetagas | 2013 | 8,009 |
| Coral Methane | 2008 | 7,833 |
| Epic Bonaire | 2016 | 6,220 |
| Sigmagas (this ship) | 1998 | 6,051 |
| Kairos | 2018 | 6,000 |
| Jotagas | 1997 | 5,420 |
| Kappagas |
Same yard, same years
No ship class is recorded for this vessel, so these are not asserted to be sister ships — they are contemporaries from the same builder, shown because that is what the data supports.
Same fleet
Provenance
Vessel recordWikidata, released under CC0, keyed on this ship’s IMO number.
Written summaryNo English Wikipedia article is linked to this vessel, so no summary is shown.
PhotographBy AlfvanBeem, reused under CC0.
| 2001 |
| 5,278 |