Navalyze · Container · Ship

JASPER

IMO: 9968061
Type: Container ship
Average cargo carried: 65,658 t
Port of registry: Singapore
Technical efficiency: EEXI 7.26 g CO₂/t·nm
Fuel: Mostly LNG

ISM company (DoC holder) in 2025: Seaspan Ship Management Ltd.

2025 at a glance

From the 2025 THETIS-MRV report. Carries about 65,658 t of cargo on average.

Fuel per mile

192.4 kg/nm

Container median 177.0 kg/nm (+9%)

CO₂ per transport work (cargo)

8.40

g CO₂/t·nm · Container median 16.30 (−48%)

Average speed

18.6 kn

Container median 13.3 kn (+40%)

Fuel per day at sea

85.7 t/day

Fuel consumed

2,611 t

CO₂ emitted

7,485 t

7,887 t CO₂eq incl. CH₄ and N₂O

Distance sailed

13,571 nm

CO₂ ÷ CO₂ per mile

Time at sea

731 h

30 days, 8% of the year

Within the container fleet, 2025

Set against all 2,208 container 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 per mileThis ship 192.4 kg/nm · median 177.0 (+9%)

78.8Ranks 1,225 of 2,208, lowest first302.4

Average speedThis ship 18.6 kn · median 13.3 (+40%)

9.1Faster than 100% of container ships16.0

CO₂ per transport work (cargo)This ship 8.40 g CO₂/t·nm · median 16.30 (−48%)

7.22Ranks 397 of 2,208, lowest first46.89

Middle 80% of shipsMiddle 50%Container medianThis ship

Where the emissions happen, 2025

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 EU10%
Into the EU90%
At berth in the EU0%

50% of this ship's CO₂ falls under the EU ETS (3,752 t).

Fuel burned laden

–

Not reported

CO₂ at berth

0.3%

Alongside in EU ports

Methane (CH₄)

11.1 t

LNG engines slip unburnt methane

CO₂eq ÷ CO₂

1.054

Uplift from CH₄ and N₂O, counted in full from 2026

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
2025LNG	Seaspan Ship Management Ltd.	2,611	7,485	13,571	731	18.6	192.4	8.40	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Container median	vs Container	Rank	Verifier	Methods
2025LNG	Seaspan Ship Management Ltd.	8.40	16.30	−48%	397 of 2,208	DNV	B+C

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.