BLUE SAPPHIRE
- IMO
- 7822457
- Type
- Passenger ship (Cruise Passenger ship)
- Flag (estimated)
- Saint Kitts and Nevis
- Port of registry
- Basseterre
- Former names
- SAGA SAPPHIRE
ISM company (DoC holder) in 2025: SIGNUM DESTEK HIZMETLERI
2023 at a glance
From the 2023 THETIS-MRV report.
Within the cruise fleet, 2025
Set against all 202 cruise 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.
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 ports40%
- From the EU15%
- Into the EU14%
- At berth in the EU31%
Over the years
Full-year reports only. The Cruise median is the middle ship of all cruise ships reporting that year; it moves with the fleet, so a ship can gain on it without changing itself.
Fuel kg/nm
- BLUE SAPPHIRE
- Cruise median
Average speed, kn
- BLUE SAPPHIRE
- Cruise median
CO₂ per transport work (pax), g CO₂/pax·nm
- BLUE SAPPHIRE
- Cruise median
Year on year
| Year | Average speed | Fuel kg/nm | Fuel per day at sea | Distance | CO₂ per transport work | Reading |
|---|---|---|---|---|---|---|
| 2024→2025 | +0.1 kn | −23% | −22% | +7% | −48% | Same speed, fuel per mile down 23%; better than speed alone explains (hull, engine or trade). |
| 2023→2024 | +0.5 kn | −15% | −11% | +1,011% | – | 0.5 kn faster, fuel per mile down 15%; better than speed alone explains (hull, engine or trade). |
| 2018→2023 | −0.4 kn | +6% | +2% | −99% | – | 0.4 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 | SIGNUM DESTEK HIZMETLERI | 1,838 | 5,891 | 14,054 | 1,261 | 11.1 | 131 | – | – |
| 2024 | SIGNUM DESTEK HIZMETLERI | 2,254 | 7,226 | 13,195 | 1,202 | 11.0 | 171 | – | – |
| 2023 | not published | 240 | 769 | 1,188 | 114 | 10.5 | 202 | – | – |
| 2018 | not published | 16,454 | 51,970 | 86,026 | 7,916 | 10.9 | 191 | – | – |
Benchmark and verification
| Year | ISM company | CO₂ per TW, g CO₂/pax·nm | Cruise median | vs Cruise | Rank | Verifier | Methods |
|---|---|---|---|---|---|---|---|
| 2025 | SIGNUM DESTEK HIZMETLERI | 944 | 521 | +81% | 152 of 202 | Polish Register of Shipping | B |
| 2024 | SIGNUM DESTEK HIZMETLERI | 1,822 | 686 | +166% | 13 of 17 | Phoenix Register of Shipping | B |
| 2023 | not published | – | – | – | – | Phoenix Register of Shipping | B |
| 2018 | not published | 1,062 | 577 | +84% | 122 of 153 | DNV | B |
Fuel per mile and CO₂ per tonne-mile are the ship's own reported KPIs. Cruise ships are benchmarked on CO₂ per transport work (pax) (TW), in g CO₂/pax·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 cruise 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.