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A public reference property of Baalvion
Open data · every figure carries its source
Tug
Operated by Bourbon Offshore Norway
Photo: User:Sveter (Please credit as "Petr Šmerkl, Wikipedia" in case you use this outside WMF projects.) · CC BY-SA 3.0 · file
Largest in this registry
#52,217
of 84,014 with a recorded tonnage
Largest tug
#60
of 1,263 of this type with a recorded tonnage
Largest in its fleet
#10
of 10 in this fleet with a recorded tonnage
In brief
AHTS Bourbon Dolphin was an anchor handling tug supply vessel of Bourbon Offshore Norway. The ship capsized off the coast of Shetland on April 12, 2007, and sank three days later while preparations were being made to tow her to shore.
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 2,974 gross tons, Bourbon Dolphin is the 52,217th 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 2.0 times smaller than the typical vessel on record here. The largest measures 499,167 GT.
Among the 1,471 tugs held here, it ranks 60th by tonnage — larger than 95% 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.
Norway is the country of registry for 3,032 vessels in this directory, of which Bourbon Dolphin is the 1,311th largest by tonnage. The most common class under that flag is vessels this registry holds no type classification for (2,126 ships), and the median vessel measures 3,102 GT. Browse every ship flagged Norway.
Narrowing to both dimensions at once, this registry holds 38 tugs flying the Norway flag, of which 12 are larger by tonnage.
Bourbon Dolphin was built in 2006, making it 20 years old. It is one of 2,118 hulls in this registry delivered that year, a cohort whose median tonnage is 8,539 GT; within it this ship is the 1,383rd largest. Across the whole of the 2000s the registry holds 18,605 vessels, median 9,957 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 75.2 m overall, Bourbon Dolphin is 42.9 m longer than the 32.3 m median for tugs on record, with a beam of 17.0 m and a draft of 6.5 m.
IMO numbers are issued in broadly chronological blocks. Within 500 either side of 9351983 this registry holds 71 other vessels, whose median build year is 2007 and which range from 2005 to 2010. That places this hull’s registration in the same part of the series, consistent with its recorded build year of 2006.
Its IMO number, 9351983, carries its own check digit. The first six digits are weighted seven down to two and summed — 9×7 + 3×6 + 5×5 + 1×4 + 9×3 + 8×2 = 153 — and the last digit of that total, 3, must equal the seventh digit, 3. It does, so this number is well formed.
Nearest by tonnage among tugs
| Ship | Built | Gross tonnage |
|---|---|---|
| Seival | 2000 | 3,157 |
| Bourbon Crown | 2001 | 3,154 |
| Casey Chouest | 1998 | 2,990 |
| Bourbon Dolphin (this ship) | 2006 | 2,974 |
| Ezzat Adel | 1994 | 2,952 |
| Fyodor Uryupin | 2010 | 2,921 |
| Normand Topazio |
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.

Normand Installer
2006 · 14,506 GT · Norway

Normand Energy
2007 · 14,161 GT · Norway
Olympic Triton
2007 · 5,947 GT · Norway

Island Patriot
2005 · 5,800 GT · Norway
Island Pioneer
2006 · 5,233 GT · Mexico
Peridot
2005 · 4,375 GT · Liberia

Bourbon Orca
2006 · 4,311 GT · Norway

Bourbon Monsoon
2007 · 3,922 GT · Norway
Same fleet
Provenance
Vessel recordWikidata, released under CC0, keyed on this ship’s IMO number.
Written summaryQuoted from AHTS Bourbon Dolphin on English Wikipedia, reused under CC BY-SA 4.0.
PhotographBy User:Sveter (Please credit as "Petr Šmerkl, Wikipedia" in case you use this outside WMF projects.), reused under CC BY-SA 3.0.
| 2005 |
| 2,854 |