Navalyze · Offshore · Ship

ENERGY SWAN

IMO: 9319985
Type: Other ship types (Offshore)
Average cargo carried: 351 t
Port of registry: åLesund

ISM company (DoC holder) in 2025: GOLDEN ENERGY OFFSHORE MGMT AS

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 351 t of cargo on average.

Fuel per mile

101.7 kg/nm

Offshore median 83.0 kg/nm (+23%)

CO₂ per transport work (cargo)

928

g CO₂/t·nm · Offshore median 1,367 (−32%)

Average speed

4.0 kn

Offshore median 4.6 kn (−13%)

Fuel per day at sea

9.8 t/day

0.41 t/h as reported

Fuel consumed

1,511 t

CO₂ emitted

4,845 t

4,919 t CO₂eq incl. CH₄ and N₂O

Distance sailed

14,855 nm

CO₂ ÷ CO₂ per mile

Time at sea

3,702 h

154 days, 42% of the year

Within the offshore fleet, 2025

Set against all 91 offshore ships with a full-year 2025 report. Bigger ships burn more per mile but less per tonne of cargo, so read fuel per mile with the ship's size in mind.

Fuel per mileThis ship 101.7 kg/nm · median 83.0 (+23%)

32.2Ranks 60 of 91, lowest first256.6

Average speedThis ship 4.0 kn · median 4.6 (−13%)

1.7Faster than 40% of offshore ships7.4

CO₂ per transport work (cargo)This ship 928.37 g CO₂/t·nm · median 1,367.14 (−32%)

82.30Ranks 39 of 91, lowest first37,968.46

Middle 80% of shipsMiddle 50%Offshore medianThis ship

Where the emissions happen, 2025

THETIS splits each ship's CO₂ by voyage type. The split sets how much falls under the EU ETS: all of it within the EU and at berth, half of it on voyages into or out of the EU.

Between EU ports89%
From the EU5%
Into the EU0%
At berth in the EU6%

97% of this ship's CO₂ falls under the EU ETS (4,722 t).

Fuel burned laden

–

Not reported

CO₂ at berth

5.6%

Alongside in EU ports

Methane (CH₄)

0.1 t

Mainly from LNG; small for oil

CO₂eq ÷ CO₂

1.015

Uplift from CH₄ and N₂O, counted in full from 2026

Every reporting year

One row per THETIS-MRV report. A ship that changed operator during a year has a part-year report for each.

Operation

Year	ISM company	Fuel t	CO₂ t	Distance nm	At sea h	Speed kn	Fuel kg/nm	CO₂ g/t·nm	Laden fuel
2025	GOLDEN ENERGY OFFSHORE MGMT AS	1,511	4,845	14,855	3,702	4.0	101.7	928.37	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Offshore median	vs Offshore	Rank	Verifier	Methods
2025	GOLDEN ENERGY OFFSHORE MGMT AS	928.37	1,367.14	−32%	39 of 91	DNV	A+B+C

Fuel per mile and CO₂ per tonne-mile are the ship's own reported KPIs. Offshore ships are benchmarked on CO₂ per transport work (cargo) (TW), in g CO₂/t·nm. CO₂eq adds methane and nitrous oxide and is in the public files from 2024. Rank counts from the lowest figure among that year's offshore ships. Methods: A delivery notes, B tank monitoring, C flow meters, D direct measurement. FuelEU GHG intensity is not shown: it needs fuel types, which the public file does not carry. Operators are named only from 2024, the first year the public files carry them; earlier years belong to the ship, not to any company.