Spirit of Tasmania I and Spirit of Tasmania II information
Their builder was Kvaerner Masa-Yards (Finland) in 1998. Their original ports were
Ancona Italy, and Patras Greece, and they were originally named Superfast 1
and Superfast 2 and each has a gross tonnage of 29,338. Their first crossing of
Bass Strait was in September 2002. Total Lane length on the vehicle decks is approx.
2,565 which would accomodate about 513 vehicles each 5 metres in length.
Each ship
has 222 cabins. Eight cabins are deluxe; 153 are four berth with 72 of these
having portholes, while there are 59 twin berth cabins with portholes
and two easy access cabins for wheelchairs.
Each cabin has private bathroom failities.
As well, there are a total of 270 cruise seats and recliners.
Normal schedule is for a sailing time of 11 hours at about 23 knots, however
in busy times, the schedule is for two sailings, (a return journey within a 24
hour period) which is called a double sailing, and speed can be in increased
to some 27 knots for a crossing of 9 hours.
There are four main engines, two for each propeller), which are connected to two variable
pitch propellers through reduction gearboxes with a ration of 510 (engine revs per minute)
to 147 (propeller revs per minute). Load on the engines and accordingly speed of the ships
can be varied by varying the propellor blade pitch.
The main engines are Wartsila/New Sulzer
V16 turbo charged diesels with each engine capable of producing 10,560 Kilowatts
with a total of some 42,240.
Engines are under full load on the double crossings.
Heavy thick 'bunker' oil is used at some
seven tonnes per hour is burned.
At sea, power is generated from two shaft generators, operating at 1,200 RPM
and in port it is generated from diesel generators.
Power, or electrical generation requirements are some 3,000 kilowatts.
The ships each have two Blohm and Voss retractable stabilizer fins which are
eight metres long and
600 mm wide; and two bow thrusters and one stern thruster.
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