SEA1 AMETHYST (IMO 9442433)
SEA1 AMETHYST is an Offshore Tug/Supply Ship built in 2011 and flying the Norway (NIS) flag, placing it in its 15th year of service. The vessel reports a deadweight tonnage of 4,250 metric tonnes, a gross tonnage of 7,473, and a length overall of 91 metres. This vessel is configured for specialized offshore support and supply operations. SEA1 AMETHYST is classed by DNV-GL (ex DNV), which is a member of the International Association of Classification Societies (IACS). The vessel has been observed in the Singapore Strait, South East Asia, and the Java Sea, Singapore Strait, and South China Sea. It has previously operated under two former names and two former flag states. Over the last 36 months it has had 2 port state control (PSC) inspections and no detentions. The most recent inspection was on 18 November 2025.
- Type: Offshore Tug/Supply Ship
- Flag: Norway (NIS)
- Year built: 2011
- MMSI: 259801000
- Call sign: LCBM3
- Gross tonnage: 7473
- Deadweight: 4250 t
- Length overall: 91 m
- Beam: 22 m
- Home port: Kristiansand
- Port State Control (PSC) inspections: 14 since 2011
- PSC detentions in the last 36 months: 0
- Last PSC inspection: 18/11/2025
- Registered owner: SEA1 AHTS POOL AS (Norway)
- Ship manager · ISM manager · DOC holder: SEA1 OFFSHORE AS (Norway)
- Last AIS position: 1°16.2′N · 103°52.9′E · Speed 0.0 kn · at anchor · received 12 October 2026 at 20:43 UTC
- Destination: SINGAPORE- AEW
Frequently asked questions
What is the vessel type and age of SEA1 AMETHYST?
SEA1 AMETHYST is an Offshore Tug/Supply Ship. It was built in 2011 and is currently in its 15th year of service.
What are the dimensions of SEA1 AMETHYST?
The vessel has a length overall of 91 metres and a beam of 22 metres. It operates with a maximum draught of 7.97 metres.
Which classification society manages SEA1 AMETHYST?
The vessel is classed by DNV-GL (ex DNV), which is an IACS member. Its current class status is listed as Delivered.
Where has SEA1 AMETHYST been recently operating?
The vessel has been observed in the Singapore Strait and South East Asia. It has also been recorded in the Java Sea and South China Sea.
What is the PSC inspection history for SEA1 AMETHYST?
Over the last 36 months it has had 2 port state control (PSC) inspections and no detentions, with 11 deficiencies recorded. The most recent inspection was on 18 November 2025. All-time records show 14 inspections since 2011 and no detentions.
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