MO4 (IMO 8569052)
MO4 is an Offshore Supply Ship built in 2017 and flying the Latvia flag, placing it in its ninth year of service. The vessel reports a deadweight tonnage of 99 metric tonnes and a gross tonnage of 137. Given its dimensions and capacity, it is configured for specialized offshore support operations. MO4 is classed by Registro Italiano Navale, which is an IACS member. The vessel has been observed in the West Europe region over recent periods. It has previously operated under two different flag states and has been registered under one former name. Over the last 36 months it has had 2 port state control (PSC) inspections and no detentions. The most recent inspection was on 11 March 2026.
- Type: Offshore Supply Ship
- Flag: Latvia
- Year built: 2017
- MMSI: 275512000
- Call sign: YLRC
- Gross tonnage: 137
- Deadweight: 99 t
- Beam: 9.5 m
- Home port: RIGA - 0992
- Port State Control (PSC) inspections: 5 since 2021
- PSC detentions in the last 36 months: 0
- Last PSC inspection: 11/03/2026
- Registered owner · Ship manager: MAINPRIZE OFFSHORE LTD (United Kingdom)
- Last AIS position: 53°36.1′N · 008°8.8′E · Speed 0.0 kn · moored · received 14 October 2026 at 17:46 UTC
- Destination: JADE WESER PORT
Frequently asked questions
What is the vessel type of MO4?
MO4 is an Offshore Supply Ship. It was built in 2017 and is currently in its ninth year of service.
What are the engine specifications for MO4?
The vessel is equipped with a main engine providing 2,386 kW of power. This power rating supports its operational requirements as an offshore supply unit.
What is the dimension profile of MO4?
The vessel has a beam of 9.5 metres. It reports a gross tonnage of 137 and a deadweight tonnage of 99 metric tonnes.
Which classification society maintains MO4?
MO4 is classed by Registro Italiano Navale. This society is a member of the International Association of Classification Societies (IACS).
How many PSC inspections has MO4 undergone?
Over the last 36 months it has had 2 port state control (PSC) inspections and no detentions, with 2 deficiencies recorded. The most recent inspection was on 11 March 2026. All-time records show 5 inspections since 2021 and no detentions.
Live AIS via Rynda — combined with classification, PSC, sanctions and ownership data.