MASON G (IMO 9773076)
MASON G is an Offshore Supply Ship built in 2015 and flying the United States of America flag, placing it in its 11th year of service. The vessel reports a deadweight tonnage of 444 metric tonnes and a gross tonnage of 368. This vessel is configured for offshore support operations within its specific size class. MASON G is classed by the American Bureau of Shipping, which is an IACS member. The vessel has been observed in the Middle America and Gulf of Mexico region. It has previously operated under one former name and one former flag. Over the last 36 months it has had 2 port state control (PSC) inspections and no detentions. The most recent inspection was on 20 August 2026.
- Type: Offshore Supply Ship
- Flag: United States of America
- Year built: 2015
- MMSI: 367640910
- Call sign: WDH6713
- Gross tonnage: 368
- Deadweight: 444 t
- Port State Control (PSC) inspections: 2 since 2026
- PSC detentions in the last 36 months: 0
- Last PSC inspection: 20/08/2026
- Registered owner: JJWZ MARINE INC (USA)
- Ship manager: RODI MARINE LLC (USA)
- Last AIS position: 29°7.2′N · 090°12.2′W · Speed 0.0 kn · moored · received 10 October 2026 at 22:55 UTC
- Destination: US^0U1R>?? ???
Frequently asked questions
What is the vessel type of MASON G?
MASON G is an Offshore Supply Ship. It was built in 2015 and is currently in its 11th year of service.
What are the tonnage specifications for MASON G?
The vessel has a deadweight tonnage of 444 metric tonnes. Its gross tonnage is recorded at 368.
Which classification society serves MASON G?
The vessel is classed by the American Bureau of Shipping. This society is a recognized member of the International Association of Classification Societies (IACS).
Where has MASON G been operating recently?
The vessel has been observed in the Middle America and Gulf of Mexico region. This area is consistent with its current flag state of the United States of America.
How many PSC inspections has MASON G undergone?
Over the last 36 months it has had 2 port state control (PSC) inspections and no detentions, with no deficiencies recorded. The most recent inspection was on 20 August 2026. All-time records show 2 inspections since 2026 and no detentions.
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