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Tidekongen, Tideprinzen and Tidedronningen*, the three mix-electric Diesel/liquefied natural gas (LNG) powered ferries (CODOGAEL**) ferries built by STX Europe shipyard in Lanester (Brittany, France) have officially joined Tide
Built and delivered by STX Europe shipyard in Lanester (Brittany, France) during June and July, all three vessels came into service in early August 2009, connecting the Oslo business area to the residential neighbourhood of the Nesodden peninsula, with 33 crossings per day distributed between the three ferries.
Provided with a liquefied natural gas (LNG) propulsion the ferries that will operate in the sheltered waters of the Nesodden peninsula claim to be respectful of the environment while emitting 80 % less nitrogen oxide (NOx) than a classic Diesel-powered vessel.
Industrial, technological and ecological performance
The simultaneous construction of these three ferries, within a very short timescale of eighteen months, represents a technical first as well as a real challenge, which the teams at Lanester shipyard have successfully achieved . The shipyard has thus confirmed its ability to innovate in the design of these ferries, by mastering integration of the machinery in a very confined space, and by coming up with technical solutions in order to adapt to the operational constraints of the vessels (crossing time limited to 23 minutes; numerous rotations; turnaround time of 7 minutes only).
" Building these ferries for Tide Sjø was a particularly motivating challenge for our shipyard. To have succeeded naturally constitutes a great source of satisfaction for our teams and also our partners in this projects. Together we have demonstrated our ability to manage this propulsion mode both innovative and respectful of the environment. This will certainly provide us with a competitive edge. I am sure that this is a precedent for future projects, especially in the fields of river cruise ships, tugboats or cargo vessels", declared Jean Roche, Director of STX Europe Lanester shipyard.
* Tidekongen : King of Tide ; Tideprinzen : Prince of Tide ; Tidedronningen : Queen of Tide
** CO-generation Diesel Oil, Gas, Electric
Main technical information about the coastal ferries (Design MM49 PE)
- Signature of the contract with Tide Sjø for three coastal LNG ferries: October 2007
- Contract amount: ca. 45 M€
- Designer: Multimaritime AS
- Length: 49.90 meters
- Breadth: 12.20 meters
- Weight steel / aluminium: 400 t / 15 t
- Gross tonnage: 150 t
- Full displacement: 877 t
- Service speed: 12 knots
- Passengers: 600 persons and bicycles
- Classification : DNV
Propulsion: Diesel Oil /Gas electric (CODOGAEL: COgeneration Diesel Oil, GAs, ELectricity)
- 2 x 650 kW azimuth thrusters Schottel STP 1010 (1 fore / 1aft)
- 2 x 670 kW asynchronous electric motors WEG MGW355
- 2 x 700 kW frequency converters / inverters VACON NXP with AFE and brake chopper
- 2 main switchboards: 690 V / 50 Hz
- 4 gensets (total installed: 1,488 kWe) =
* 2 Diesel agg. 424 kWe: Scania DI 1655 M + LSAM 49.1
* 2 gas agg. 320 kWe : Mitsubishi GS6R-MPTK + LSAH 49.1
- NOx reduction, compared to Diesel engines : about 80%
Energy production: Diesel-electric/gas-electricLNG gas system general data :
- Gross volume, warm: 29 m3
- Net volume, warm: 26.1 m3 (90%) corresponding to volume of a truck
- Temperature: -196°C
- Design pressure: 10 bar
- Insulation: perlite/vacuum
- Weigh of empty tank and equipped tank room: 21 tons
- Water heated* vaporizer/ Production capacity: 132 kg/h
(* 35 kW for gas supply to engine + 55 kw to maintain gas pressure = 90 kW total)
Operating area and climatic conditions:
- Norway, navigation in protected waters
- Air temperature between +35°C and -20°C
- Water temperature: between +25°C and -2°C
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