TonneMiles

Other ship types (Offshore) · Netherlands flag · built 1979

TIDEWAY ROLLINGSTONE: CO₂ emissions 2025

IMO 7814101 MMSI 245746000EU ETS

CO₂ reported 2025
13,752 t
Fuel burned
4,289 t
Time at sea
6,189 h
Emitted at berth
9% of total
Share of year under way
71%

TIDEWAY ROLLINGSTONE against its type

Built in 1979, it is 32 years older than the median offshore vessel on this register, which was built in 2011 (410 vessels with a known build year). It is one of 29 offshore vessels here under the Netherlands flag, 7.0% of the 413 on the register. The same builder is recorded for 468 other vessels here.

Its 13,752 t of CO₂ for 2025 is 3.4 times the median of 4,049 t among the 390 offshore vessels on this register that reported for 2025. Per nautical mile it emitted 669.2 kg CO₂, 1.9 times the type median of 348.3 kg. It logged 6,189 hours at sea against a median of 3,550 hours for its type that year. 8.7% of its 2025 emissions were at berth; the median for offshore vessels was 6.4%. Of the 8 comparable vessels listed below with a 2025 return, 5 reported a lower CO₂ per nautical mile than this vessel.

Emissions by year2025–2025

Year CO₂ (t) Fuel (t) Distance (nm) At sea (h) At berth (t) kg CO₂/nm EEOI Percentile
2025 13,752 4,289 — 6,189 1,202 669.2 — —

Vessel particulars

IMO number
7814101
Previously reported as
ROLLINGSTONE
MMSI
245746000
Ship type
Other ship types (Offshore)
Length overall
143.0 m
Beam
32.0 m
Year built
1979
Flag state
Netherlands per EU MRV 2025
Builder
Oshima Shipbuilding
Port of registry
Vlissingen MRV 2025
Home port
Vlissingen
Verifier
DNV, Germany
Accreditation
VS-16026-01
Compliance document issued
2026-07-08
Compliance document expires
2027-06-30

Where the 2025 emissions occurred

At berthAt berth: 1,202 t1,202Within EEA portsWithin EEA ports: 1,255 t1,255Voyages between EEA portsVoyages between EEA ports: 12,497 t12,497

Methane, nitrous oxide and EU ETS2025

Total CO₂ equivalent
13,963 t
Methane (CH₄)
0.21 t
Nitrous oxide (N₂O)
0.77 t
Under EU ETS
13,752 t, 100% of total

Observed movementsAIS · Norwegian waters

First seen
01 Jul 2025
Last seen
04 Apr 2026
Days observed
21
Positions
1,274
Median speed
9.1 kn

Its recorded positions span 58.0°N to 59.4°N and 4.5°E to 9.4°E.

58.5059.006.008.00KarstoStavangerArendalEgersundFarsundFlekkefjordenKristiansandMandalFirst observed positionLast observed position50 nm°N°E

400 hourly points from 1,274 positions. Filled circle first, open circle last; squares are ports for orientation, not calls.

Positions recorded per month

Jul 25: 340 positionsJul 25340Aug 25: 153 positionsAug 25Nov 25: 257 positionsNov 25Feb 26: 221 positionsFeb 26Apr 26: 303 positionsApr 26303

Norwegian Coastal Administration open AIS, Norwegian waters only, 01 Jul 2025 to 27 Jul 2026. A gap means the vessel was not recorded here, not that it was idle or that a transponder was off.

Sources and how to read this

This page draws on 1 MRV reporting year, 4 of 5 vessel particulars, AIS movements in Norwegian waters and a name history. Not found in the sources for this vessel: an efficiency ranking, a licensed photograph, a sanctions listing and US port state inspections.

Empty means unreported, never zero. How EEOI, distance, percentiles and sister ships are handled is explained under reading a vessel page. Something wrong? See corrections.

Comparable vesselsnearest by tonnage, same type