Feature 1 | CRUISESHIP TECHNOLOGY ABB at the heart of Solstice celebration
Justly praised for her environmentally-friendly attributes, Celebrity Solstice is also an innovative ship from the electrical and propulsion systems point of view.
A
fter four months in service, the Captain and chief engineer aboard Celebrity Cruises’ first of
class cruiseship, Celebrity Solstice, report that the state of the art vessel is exceeding expectations. Amid the fanfare of delivery from Meyer
Werſt, in October 2008, attention focused on the environmentally-friendly aspects of the 122,000gt ship, whose owner says consumes 30% less energy than ships previously delivered. No detail has proved too small in
achieving this target. For a start, the 317.2m longCelebrity Solstice is distinguished from other cruiseships by virtue of the fact that her hull, rather than her interior spaces, provided the first block in the ship’s design, with the aim being to create the most fuel efficient hull possible. Her long bulbous bow, combined with her sleek hull lines, and the low friction silicon paint from International Coatings imbue the ship with enhanced hydrodynamic performance. Other energy-saving attributes
include the sloped, aerodynamic forward superstructure, the waste heat recovery system, where energy recovered from the ship’s four 16V46 common rail main engines is used to desalinate and heat water for hotel purposes, and the use of 4500 low wattage LED lights that save 150kW against an equivalent installation using conventional 25W lights
TECHNICAL PARTICULARS Celebrity Solstice
Tonnage ................................122,000tonnes Length................................................317.2m Beam..................................................36.88m Draught................................................8.23m Decks ......................................................... 19 Installed power ...............4 x Wärstilä 16V46 Propulsion ......................2 x 20.5MW Azipod Speed ............................................... 25knots Capacity ...........................2850 passengers Crew....................................................... 1500
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Celebrity Solstice, on her arrival after delivery. Again, the 500m2 area of solar panels
mounted atop the ship’s solarium generates the 75kW required to run the ship’s eight liſts, while some 5700 sensors throughout the ship optimise heating, ventilation and air conditioning power consumption – the second biggest draw on ship’s power, aſter main propulsion. Tinted double glazed windows developed in conjunction with 3M that do not allow ultraviolet rays through, further minimise HVAC power demand. Celebrity Solstice is reckoned to have the same AC power demand as the 2000-built Millennium, despite carrying 1000 more passengers. But, what Captain Panagiotis Skylogiannis
and chief engineer Evangelos Saliaris are driving at, are not the ship’s environmental credentials, but its operational performance. According to Captain Skylogiannis, who
has 21 years of service as Captain of Celebrity Cruise vessels, the difference was apparent as soon as sea trials began. “From the first impression, the ship was very manoeuvrable and the diesel electric powering solution very quiet,” he said. Chief engineer Mr Saliaris has been a Celebrity chief engineer since 1996, and
his resumé includes a period onboard Millennium, the first Celebrity ship to feature podded propulsion. He added: “Straightaway, she [Celebrity Solstice] showed good stability at 2.7GM, and the pods performed well. Angles of list did not exceed 7degrees, even at 25knots. With the pods operating in reverse, the ship could be stopped in half of her required stopping distance.” Mr Saliaris said that, at her top speed of
25knots, Celebrity Solstice required the same horse power as that required to drive the 25% smallerMillennium.
Advantage Azipod Te podded propulsors referred to are, at 20.5MW apiece, the largest power rated pods that ABB has ever installed. The 360degree rotating units are also the first ABB pods to grace a Celebrity ship. Mr Saliaris, who has worked with ABB pods aboard ships operated by Royal Caribbean International for the last eight years, said that aſter four months in service, “Te pods have performed very smoothly, in very rough seas, and they are even better than we expected.”
® The Naval Architect February 2009
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