Navalyze · Reefer · Ship

SEIN SAPPHIRE

IMO: 9045168
Type: Refrigerated cargo carrier
Average cargo carried: 3,941 t
Flag (estimated): South Korea
Port of registry: Jeju
Technical efficiency: EEXI 21.50 g CO₂/t·nm
Former names: WATER PHOENIX

ISM company (DoC holder) in 2025: Seatrade Groningen B.V. · part of Seatrade

Report year

2020 at a glance

From the 2020 THETIS-MRV report. Carries about 2,844 t of cargo on average.

Fuel kg/nm

61.1

Reefer median 82.8 kg/nm (−26%)

CO₂ per transport work (cargo)

67.3

g CO₂/t·nm · Reefer median 59.1 (+14%)

Average speed

14.4 kn

Reefer median 15.6 kn (−8%)

Fuel per day at sea

21.2 t/day

Fuel consumed

2,454 t

CO₂ emitted

7,677 t

Distance sailed

40,141 nm

CO₂ ÷ CO₂ per mile

Time at sea

2,784 h

116 days, 32% of the year

Within the reefer fleet, 2025

Set against all 109 reefer 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 65.0 kg/nm · median 82.9 (−22%)

55.8Ranks 26 of 109, lowest first118

Average speedThis ship 8.2 kn · median 14.6 (−44%)

8.2Faster than 10% of reefer ships16.7

CO₂ per transport work (cargo)This ship 51.9 g CO₂/t·nm · median 56.8 (−9%)

36.7Ranks 42 of 109, lowest first140

Middle 80% of shipsMiddle 50%Reefer medianThis ship

Where the emissions happen, 2020

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 ports4%
From the EU44%
Into the EU49%
At berth in the EU3%

Fuel burned laden

–

Not reported

CO₂ at berth

265 t

3.5% 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 Reefer median is the middle ship of all reefer ships reporting that year; it moves with the fleet, so a ship can gain on it without changing itself.

Fuel kg/nm

SEIN SAPPHIRE
Reefer median

50.060.070.080.090.0

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

Average speed, kn

SEIN SAPPHIRE
Reefer median

5.07.510.012.515.017.5

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

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

SEIN SAPPHIRE
Reefer median

40.060.080.0100120

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

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2024→2025	−2.1 kn	+11%	−12%	−90%	−32%	2.1 kn slower, fuel per mile up 11%; worse than speed alone explains (fouling, weather, loading or trade).
2023→2024	+3.1 kn	+7%	+53%	−14%	−8%	3.1 kn faster, fuel per mile up 7%; better than speed alone explains (hull, engine or trade).
2022→2023	−8.6 kn	−13%	−60%	−20%	+8%	8.6 kn slower, fuel per mile down 13%; worse than speed alone explains (fouling, weather, loading or trade).
2021→2022	+0.4 kn	+6%	+8%	−6%	+24%	0.4 kn faster, fuel per mile up 6%; in line with the speed change.
2020→2021	+1.0 kn	−2%	+4%	−34%	−8%	1.0 kn faster, fuel per mile down 2%; better than speed alone explains (hull, engine or trade).
2019→2020	−0.8 kn	+9%	+3%	+55%	−27%	0.8 kn slower, fuel per mile up 9%; worse than speed alone explains (fouling, weather, loading or trade).
2018→2019	+0.8 kn	−3%	+3%	+61%	−13%	0.8 kn faster, fuel per mile down 3%; better than speed alone explains (hull, engine or trade).

Part-year reports are left out of these comparisons. 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
2025part-year	Seatrade Groningen B.V.	118	372	1,820	221	8.2	65.0	51.9	–
2025	Arkor Marine Co Ltd	118	372	1,820	221	8.2	65.0	51.9	–
2024	Seatrade Groningen B.V.	1,019	3,200	17,362	1,682	10.3	58.7	76.3	–
2023	not published	1,109	3,472	20,162	2,788	7.2	55.0	82.8	–
2022	not published	1,586	4,968	25,071	1,590	15.8	63.3	77.0	–
2021	not published	1,591	4,983	26,615	1,727	15.4	59.8	62.1	–
2020	not published	2,454	7,677	40,141	2,784	14.4	61.1	67.3	–
2019	not published	1,447	4,523	25,884	1,698	15.2	55.9	92.3	–
2018	not published	924	2,889	16,037	1,114	14.4	57.6	106	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Reefer median	vs Reefer	Rank	Verifier	Methods
2025part-year	Seatrade Groningen B.V.	–	–	–	–	Bureau Veritas	A
2025	Arkor Marine Co Ltd	51.9	56.8	−9%	42 of 109	Korean Register	A
2024	Seatrade Groningen B.V.	76.3	58.7	+30%	79 of 108	Bureau Veritas	A
2023	not published	82.8	55.6	+49%	108 of 135	Bureau Veritas	A+B
2022	not published	77.0	55.3	+39%	110 of 143	Bureau Veritas	A
2021	not published	62.1	55.0	+13%	100 of 158	Bureau Veritas	A
2020	not published	67.3	59.1	+14%	90 of 149	Bureau Veritas	A
2019	not published	92.3	62.6	+47%	116 of 147	Bureau Veritas	A
2018	not published	106	72.8	+46%	107 of 136	Bureau Veritas	A

Fuel per mile and CO₂ per tonne-mile are the ship's own reported KPIs. Reefer 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 reefer 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.