Navalyze · Vehicle carrier · Ship

TRANQUIL ACE

IMO: 9561253
Type: Vehicle carrier
Average cargo carried: 7,106 t
Flag (estimated): Panama
Port of registry: Panama
Technical efficiency: EEXI 14.90 g CO₂/t·nm

ISM company (DoC holder) in 2025: MASUMOTO SHIPPING CO.,LTD.

Report year

2019 at a glance

From the 2019 THETIS-MRV report. Carries about 6,229 t of cargo on average.

Fuel kg/nm

104

Vehicle carrier median 104 kg/nm (−0%)

CO₂ per transport work (cargo)

52.3

g CO₂/t·nm · Vehicle carrier median 59.0 (−11%)

Average speed

14.0 kn

Vehicle carrier median 14.2 kn (−1%)

Fuel per day at sea

34.8 t/day

Fuel consumed

2,707 t

CO₂ emitted

8,486 t

Distance sailed

26,070 nm

CO₂ ÷ CO₂ per mile

Time at sea

1,868 h

78 days, 21% of the year

Within the vehicle carrier fleet, 2025

Set against all 506 vehicle carrier 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 109 kg/nm · median 99.9 (+9%)

79.6Ranks 393 of 506, lowest first119

Average speedThis ship 16.3 kn · median 14.4 (+13%)

12.0Faster than 94% of vehicle carrier ships15.9

CO₂ per transport work (cargo)This ship 48.0 g CO₂/t·nm · median 55.4 (−13%)

34.7Ranks 193 of 506, lowest first158

Middle 80% of shipsMiddle 50%Vehicle carrier medianThis ship

Where the emissions happen, 2019

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 ports29%
From the EU25%
Into the EU44%
At berth in the EU3%

Fuel burned laden

–

Not reported

CO₂ at berth

229 t

2.7% 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 Vehicle carrier median is the middle ship of all vehicle carrier ships reporting that year; it moves with the fleet, so a ship can gain on it without changing itself.

Fuel kg/nm

TRANQUIL ACE
Vehicle carrier median

90.0100.0110.0120.0

’182018’192019’202020’212021’222022’232023’242024’252025

Average speed, kn

TRANQUIL ACE
Vehicle carrier median

13.014.015.016.017.0

’182018’192019’202020’212021’222022’232023’242024’252025

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

TRANQUIL ACE
Vehicle carrier median

45.050.055.060.065.070.0

’182018’192019’202020’212021’222022’232023’252025

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2024→2025	+0.4 kn	−5%	−2%	+124%	–	0.4 kn faster, fuel per mile down 5%; better than speed alone explains (hull, engine or trade).
2023→2024	−1.1 kn	+0%	−6%	−38%	–	1.1 kn slower, fuel per mile flat; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	+1.4 kn	+5%	+14%	−23%	−10%	1.4 kn faster, fuel per mile up 5%; better than speed alone explains (hull, engine or trade).
2021→2022	−0.3 kn	+3%	+1%	+90%	−10%	0.3 kn slower, fuel per mile up 3%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	+1.1 kn	+13%	+20%	+12%	+21%	1.1 kn faster, fuel per mile up 13%; in line with the speed change.
2019→2020	+0.8 kn	−9%	−3%	−49%	+6%	0.8 kn faster, fuel per mile down 9%; better than speed alone explains (hull, engine or trade).
2018→2019	−0.8 kn	+6%	+0%	−32%	−5%	0.8 kn slower, fuel per mile up 6%; worse than speed alone explains (fouling, weather, loading 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	MASUMOTO SHIPPING CO.,LTD.	3,253	10,146	29,755	1,820	16.3	109	48.0	–
2024	MASUMOTO SHIPPING CO.,LTD.	1,531	4,782	13,303	838	15.9	115	–	–
2023	not published	2,469	7,707	21,480	1,266	17.0	115	53.9	–
2022	not published	3,068	9,680	27,929	1,791	15.6	110	60.2	–
2021	not published	1,574	4,972	14,729	928	15.9	107	67.0	–
2020	not published	1,248	3,940	13,167	887	14.8	94.8	55.3	–
2019	not published	2,707	8,486	26,070	1,868	14.0	104	52.3	–
2018	not published	3,739	11,700	38,259	2,588	14.8	97.7	55.3	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Vehicle carrier median	vs Vehicle carrier	Rank	Verifier	Methods
2025	MASUMOTO SHIPPING CO.,LTD.	48.0	55.4	−13%	193 of 506	ClassNK	C
2024	MASUMOTO SHIPPING CO.,LTD.	–	–	–	–	ClassNK	C
2023	not published	53.9	56.6	−5%	191 of 417	ClassNK	C
2022	not published	60.2	57.7	+4%	248 of 463	ClassNK	C
2021	not published	67.0	59.6	+12%	280 of 459	ClassNK	C
2020	not published	55.3	57.3	−3%	211 of 449	ClassNK	C
2019	not published	52.3	59.0	−11%	140 of 426	ClassNK	C
2018	not published	55.3	62.4	−11%	134 of 434	ClassNK	C

Fuel per mile and CO₂ per tonne-mile are the ship's own reported KPIs. Vehicle carrier 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 vehicle carrier 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.