Navalyze · Container · Ship

TANJA

IMO: 9431692
Type: Container ship
Average cargo carried: 35,704 t
Port of registry: Majuro
Technical efficiency: EEXI 12.61 g CO₂/t·nm
Former names: TANJA RICKMERS, 5009 TANJA RICKMERS

ISM company (DoC holder) in 2025: Polar 12 Ltd

Report year

2024 at a glance

From the 2024 THETIS-MRV report. Carries about 35,704 t of cargo on average.

Fuel per mile

216.5 kg/nm

Container median 167.2 kg/nm (+29%)

CO₂ per transport work (cargo)

18.77

g CO₂/t·nm · Container median 17.52 (+7%)

Average speed

14.3 kn

Container median 13.5 kn (+6%)

Fuel per day at sea

74.1 t/day

Fuel consumed

9,573 t

CO₂ emitted

29,630 t

30,100 t CO₂eq incl. CH₄ and N₂O

Distance sailed

44,212 nm

CO₂ ÷ CO₂ per mile

Time at sea

3,099 h

129 days, 35% of the year

Within the container fleet, 2024

Set against all 1,974 container ships with a full-year 2024 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 216.5 kg/nm · median 167.2 (+29%)

78.9Ranks 1,259 of 1,974, lowest first301.6

Average speedThis ship 14.3 kn · median 13.5 (+6%)

9.6Faster than 63% of container ships16.1

CO₂ per transport work (cargo)This ship 18.77 g CO₂/t·nm · median 17.52 (+7%)

7.33Ranks 1,064 of 1,974, lowest first51.62

Middle 80% of shipsMiddle 50%Container medianThis ship

Where the emissions happen, 2024

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 ports13%
From the EU55%
Into the EU31%
At berth in the EU1%

53% of this ship's CO₂ falls under the EU ETS (15,812 t).

Fuel burned laden

–

Not reported

CO₂ at berth

0.9%

Alongside in EU ports

Methane (CH₄)

0.5 t

Mainly from LNG; small for oil

CO₂eq ÷ CO₂

1.016

Uplift from CH₄ and N₂O, counted in full from 2026

Over the years

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

Fuel per mile, kg/nm

TANJA
Container median

160.0180.0200.0220.0

’182018’192019’212021’222022’242024

Average speed, kn

TANJA
Container median

10.012.014.016.0

’182018’192019’212021’222022’242024

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

TANJA
Container median

15.020.025.030.0

’182018’192019’212021’222022’242024

Year on year

Year	Speed	Fuel per mile	Fuel per day	Distance	CO₂ per TW	Reading
2022→2024	−0.5 kn	+21%	+17%	+30%	+22%	0.5 kn slower, fuel per mile up 21%; worse than speed alone explains (fouling, weather, loading or trade).
2021→2022	−0.5 kn	−10%	−13%	−49%	−26%	0.5 kn slower, fuel per mile down 10%; in line with the speed change.
2019→2021	+2.9 kn	−1%	+22%	−12%	−26%	2.9 kn faster, fuel per mile flat; better than speed alone explains (hull, engine or trade).
2018→2019	+1.7 kn	+18%	+36%	+672%	+34%	1.7 kn faster, fuel per mile up 18%; 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	At sea h	Speed kn	Fuel kg/nm	CO₂ g/t·nm	Laden fuel
2025part-year	Polar 12 Ltd	0	0	–	0	–	–	–	–
2024	Polar 12 Ltd	9,573	29,630	44,212	3,099	14.3	216.5	18.77	–
2022	not published	6,061	18,878	33,967	2,293	14.8	178.4	15.36	–
2021	not published	13,223	41,459	66,652	4,370	15.3	198.4	20.80	–
2019	not published	15,138	47,153	75,684	6,113	12.4	200.0	28.01	–
2018	not published	1,657	5,169	9,806	913	10.7	169.0	20.84	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Container median	vs Container	Rank	Verifier	Methods
2025part-year	Polar 12 Ltd	–	–	–	–	DNV	A
2024	Polar 12 Ltd	18.77	17.52	+7%	1,064 of 1,974	DNV	A
2022	not published	15.36	19.13	−20%	728 of 1,825	Lloyd's Register	B
2021	not published	20.80	17.90	+16%	1,035 of 1,781	Lloyd's Register	B
2019	not published	28.01	18.88	+48%	1,207 of 1,788	Verifavia	B
2018	not published	20.84	20.22	+3%	890 of 1,705	Verifavia	B

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