SEVEN SISTERS (IMO 9390604)
SEVEN SISTERS is an Offshore Supply Ship built in 2008 and flying the Bahamas flag, placing it in its 18th year of service. The vessel reports a deadweight tonnage of 4,665 metric tonnes, a gross tonnage of 5,275, and a length overall of 103.7 metres. This vessel is configured for offshore support operations. SEVEN SISTERS is classed by DNV-GL (ex DNV), which is an IACS member. The vessel has been observed in the Singapore Strait, the South China Sea, and the Australia and New Zealand regions. It has previously operated under three different names and three different flags. Over the last 36 months it has had 4 port state control (PSC) inspections and no detentions. The most recent inspection was on 24 June 2026.
- Type: Offshore Supply Ship
- Flag: Bahamas
- Year built: 2008
- MMSI: 311073700
- Call sign: C6AA4
- Gross tonnage: 5275
- Deadweight: 4665 t
- Length overall: 103.7 m
- Beam: 19.7 m
- Home port: NASSAU
- Port State Control (PSC) inspections: 14 since 2010
- PSC detentions in the last 36 months: 0
- Last PSC inspection: 24/06/2026
- Registered owner: SUBSEA 7 OFFSHORE RESOURCES UK (United Kingdom)
- Ship manager · ISM manager · DOC holder: SUBSEA 7 INT'L CONTRACTING LTD (United Kingdom)
- Last AIS position: 1°18.1′N · 103°41.7′E · Speed 0.0 kn · moored · received 15 October 2026 at 22:18 UTC
- Destination: Singapore (SG SIN)
Frequently asked questions
What are the dimensions of SEVEN SISTERS?
The vessel has a length overall of 103.7 metres and a beam of 19.7 metres. It operates with a maximum draught of 6.145 metres.
What is the classification of SEVEN SISTERS?
The vessel is classed by DNV-GL (ex DNV), which is an IACS member. Its current class status is listed as Delivered with notations such as DYNPOS(AUTR) and Ice(C).
How many inspections has the vessel undergone?
Over the last 36 months it has had 4 port state control (PSC) inspections and no detentions, with 4 deficiencies recorded. The most recent inspection was on 24 June 2026. All-time records show 14 inspections since 2010 and no detentions.
Where has SEVEN SISTERS been operating recently?
The vessel has been observed in the Singapore Strait, the South China Sea, and the Australia and New Zealand regions. These areas represent its most recent geographic activity.
What is the capacity of SEVEN SISTERS?
The vessel has a deadweight tonnage of 4,665 metric tonnes. Its gross tonnage is recorded at 5,275.
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