Navalyze · Oil tanker · Ship

OVERSEAS SUN COAST

IMO: 9862944
Type: Oil tanker
Average cargo carried: 17,444 t
Flag (estimated): United States
Port of registry: Wilmington, De
Technical efficiency: EIV 3.97 g CO₂/t·nm

ISM company (DoC holder) in 2025: OSG Ship Management Inc

Report year

2023 at a glance

From the 2023 THETIS-MRV report. Carries about 22,868 t of cargo on average.

Fuel kg/nm

105

Oil tanker median 129 kg/nm (−18%)

CO₂ per transport work (cargo)

14.4

g CO₂/t·nm · Oil tanker median 8.44 (+71%)

Average speed

4.5 kn

Oil tanker median 11.0 kn (−59%)

Fuel per day at sea

11.4 t/day

Fuel consumed

1,180 t

CO₂ emitted

3,699 t

Distance sailed

11,201 nm

CO₂ ÷ CO₂ per mile

Time at sea

2,492 h

104 days, 28% of the year

Within the oil tanker fleet, 2025

Set against all 1,665 oil tanker 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 kg/nmThis ship 98.0 kg/nm · median 129 (−24%)

76.1Ranks 400 of 1,665, lowest first191

Average speedThis ship 10.9 kn · median 10.7 (+2%)

8.0Faster than 55% of oil tanker ships12.1

CO₂ per transport work (cargo)This ship 17.7 g CO₂/t·nm · median 7.95 (+123%)

4.51Ranks 1,352 of 1,665, lowest first27.7

Middle 80% of shipsMiddle 50%Oil tanker medianThis ship

Where the emissions happen, 2023

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 ports0%
From the EU63%
Into the EU34%
At berth in the EU4%

Fuel burned laden

–

Not reported

CO₂ at berth

133 t

3.6% of the ship's CO₂, alongside in EU ports

Methane (CH₄)

–

Mainly from LNG; small for oil, biofuel and methanol

CO₂eq uplift

–

CO₂eq on top of CO₂ alone, from CH₄ and N₂O

Over the years

Full-year reports only. The Oil tanker median is the middle ship of all oil tanker ships reporting that year; it moves with the fleet, so a ship can gain on it without changing itself.

Fuel kg/nm

OVERSEAS SUN COAST
Oil tanker median

80.0100.0120.0140.0

’202020’212021’222022’232023’242024’252025

Average speed, kn

OVERSEAS SUN COAST
Oil tanker median

4.06.08.010.012.014.0

’202020’212021’222022’232023’242024’252025

CO₂ per transport work (cargo), g CO₂/t·nm

OVERSEAS SUN COAST
Oil tanker median

5.010.015.020.025.0

’202020’212021’222022’232023’242024’252025

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2024→2025	−1.5 kn	+8%	−5%	−49%	+21%	1.5 kn slower, fuel per mile up 8%; worse than speed alone explains (fouling, weather, loading or trade).
2023→2024	+7.9 kn	−14%	+137%	+199%	+1%	7.9 kn faster, fuel per mile down 14%; better than speed alone explains (hull, engine or trade).
2022→2023	−7.1 kn	+6%	−59%	−24%	+54%	7.1 kn slower, fuel per mile up 6%; worse than speed alone explains (fouling, weather, loading or trade).
2021→2022	−0.3 kn	+22%	+19%	−6%	−62%	0.3 kn slower, fuel per mile up 22%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	+1.6 kn	−18%	−5%	+5%	+171%	1.6 kn faster, fuel per mile down 18%; better than speed alone explains (hull, engine or trade).

Fuel per mile rises roughly with the square of speed for a given ship, so a change in speed explains much of a change in fuel per mile.

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	Hours at seah	Average speedknots at sea	Fuel kg/nmthis ship	CO₂ per transport work (cargo)g/t·nm, this ship	Laden fuel
2025	OSG Ship Management Inc	1,674	5,268	17,071	1,568	10.9	98.0	17.7	–
2024	OSG Ship Management Inc	3,046	9,573	33,522	2,707	12.4	90.9	14.6	–
2023	not published	1,180	3,699	11,201	2,492	4.5	105	14.4	–
2022	not published	1,464	4,572	14,700	1,263	11.6	99.6	9.35	–
2021	not published	1,273	3,970	15,605	1,313	11.9	81.6	24.3	–
2020	not published	1,466	4,573	14,806	1,436	10.3	99.0	8.97	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Oil tanker median	vs Oil tanker	Rank	Verifier	Methods
2025	OSG Ship Management Inc	17.7	7.95	+123%	1,352 of 1,665	Verifavia	A+C
2024	OSG Ship Management Inc	14.6	8.06	+81%	1,421 of 1,787	Verifavia	A+C
2023	not published	14.4	8.44	+71%	1,403 of 1,797	Verifavia	–
2022	not published	9.35	8.51	+10%	1,108 of 1,961	Verifavia	A
2021	not published	24.3	8.86	+175%	1,592 of 1,789	Verifavia	B
2020	not published	8.97	9.03	−1%	928 of 1,870	Verifavia	A

Fuel per mile and CO₂ per tonne-mile are the ship's own reported KPIs. Oil tanker 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 oil tanker 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.