Navalyze · Oil tanker · Ship

CRYSTAL BAY

IMO: 9697624
Type: Oil tanker
Average cargo carried: 28,217 t
Port of registry: Majuro
Technical efficiency: EEXI 4.32 g CO₂/t·nm

Report year

2023 at a glance

From the 2023 THETIS-MRV report. Carries about 28,217 t of cargo on average.

Fuel per mile

82.1 kg/nm

Oil tanker median 129.1 kg/nm (−36%)

CO₂ per transport work (cargo)

9.16

g CO₂/t·nm · Oil tanker median 8.44 (+9%)

Average speed

11.0 kn

Oil tanker median 11.0 kn (+0%)

Fuel per day at sea

21.7 t/day

Fuel consumed

1,158 t

CO₂ emitted

3,645 t

Distance sailed

14,104 nm

CO₂ ÷ CO₂ per mile

Time at sea

1,283 h

53 days, 15% of the year

Within the oil tanker fleet, 2023

Set against all 1,797 oil tanker ships with a full-year 2023 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 82.1 kg/nm · median 129.1 (−36%)

80.4Ranks 210 of 1,797, lowest first192.7

Average speedThis ship 11.0 kn · median 11.0 (+0%)

8.1Faster than 49% of oil tanker ships12.4

CO₂ per transport work (cargo)This ship 9.16 g CO₂/t·nm · median 8.44 (+9%)

4.78Ranks 1,015 of 1,797, lowest first25.50

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 ports15%
From the EU33%
Into the EU44%
At berth in the EU8%

Fuel burned laden

–

Not reported

CO₂ at berth

8.0%

Alongside in EU ports

Methane (CH₄)

–

Mainly from LNG; small for oil

CO₂eq ÷ CO₂

–

Uplift from CH₄ and N₂O, counted in full from 2026

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 per mile, kg/nm

CRYSTAL BAY
Oil tanker median

60.080.0100.0120.0140.0

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

Average speed, kn

CRYSTAL BAY
Oil tanker median

9.010.011.012.0

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

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

CRYSTAL BAY
Oil tanker median

6.08.010.012.0

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

Year on year

Year	Speed	Fuel per mile	Fuel per day	Distance	CO₂ per TW	Reading
2022→2023	−0.1 kn	−2%	−3%	−39%	−7%	Same speed, fuel per mile flat.
2021→2022	+0.3 kn	+14%	+17%	+65%	+10%	Same speed, fuel per mile up 14%; worse than speed alone explains (fouling, weather, loading or trade).
2020→2021	−1.1 kn	+1%	−8%	−67%	+8%	1.1 kn slower, fuel per mile flat; worse than speed alone explains (fouling, weather, loading or trade).
2019→2020	+0.6 kn	−5%	+0%	+214%	+17%	0.6 kn faster, fuel per mile down 5%; better than speed alone explains (hull, engine or trade).
2018→2019	−0.4 kn	−5%	−8%	−16%	−40%	0.4 kn slower, fuel per mile down 5%; in line with the speed change.

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	At sea h	Speed kn	Fuel kg/nm	CO₂ g/t·nm	Laden fuel
2023	not published	1,158	3,645	14,104	1,283	11.0	82.1	9.16	–
2022	not published	1,929	6,064	23,116	2,074	11.1	83.5	9.84	–
2021	not published	1,026	3,212	13,989	1,297	10.8	73.3	8.93	–
2020	not published	3,100	9,714	42,649	3,588	11.9	72.7	8.30	–
2019	not published	1,040	3,250	13,601	1,207	11.3	76.5	7.12	–
2018	not published	1,302	4,075	16,133	1,383	11.7	80.7	11.96	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Oil tanker median	vs Oil tanker	Rank	Verifier	Methods
2023	not published	9.16	8.44	+9%	1,015 of 1,797	DNV	B
2022	not published	9.84	8.51	+16%	1,175 of 1,961	DNV	B
2021	not published	8.93	8.86	+1%	909 of 1,789	DNV	B
2020	not published	8.30	9.03	−8%	823 of 1,870	DNV	B
2019	not published	7.12	8.83	−19%	637 of 1,919	DNV	B
2018	not published	11.96	8.86	+35%	1,229 of 1,779	DNV	B

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.