Spirit of Tasmania I at Devonport, Tasmania
History
Name	1998–2002: Superfast IV 2002–present: Spirit of Tasmania I
Owner	1998–2002: Superfast Ferries 2002 onwards: TT-Line
Operator	1998–2002: Superfast Ferries 2003–2006: TT-Line[1]
Port of registry	1998–2002: Patras,  Greece 2002 onwards: Devonport,  Australia
Route	1998–2002: Patras–Ancona 2002-2022: Melbourne–Devonport 2022 onwards: Geelong–Devonport
Builder	Kvaerner Masa-Yards Turku New Shipyard, Finland
Yard number	1341[1]
Identification	IMO number: 9158446[1] Call sign: VNGY MMSI number: 503432000
Status	In service
General characteristics
Class and type	Superfast III class fast ropax ferry
Tonnage	29,338 GT[2] 5,651 DWT
Length	194.33 m (637 ft 7 in)
Beam	25.00 m (82 ft)
Draught	6.55 m (21 ft 6 in)
Decks	11
Installed power	4 × Wärtsilä 16ZA40S diesels 42,240 kW
Speed	30.8 kn (57.04 km/h) maximum speed
Capacity	1,400 passengers 750 berths 500 cars[3] 1,464 lanemeters[1]

MS Spirit of Tasmania I is a roll-on/roll-off ferry operated by TT-Line between Geelong and Devonport in Australia. Built in 1998 by Kvaerner Masa-Yards at Turku New Shipyard in Finland for Superfast Ferries as MS Superfast IV, since 2002 she has sailed for TT-Line as MS Spirit of Tasmania I.

The Superfast IV was the second ship of the second pair (the former pair being Superfast I and Superfast II) built for Superfast Ferries at Kvaerner Masa-Yards for its Adriatic Sea services from Patras to Ancona She was a sister ship of Superfast III.^[1]

Spirit of Tasmania I has 11 decks, with 222 cabins.

• Decks 1 to 6 are used to hold cars and trucks. The fore-ends of Decks 1 and 2 are accessed via a ramp from deck 3 (The aft-end space of the two decks houses the ships machinery). Deck 6 holds cars using a hoistable platform.
• Deck 7 has cabins, a reception area, small movie theater, lounge bar, gaming lounge, gift shop, tourism bureau, main bar, two restaurants and a children's playroom.
• Deck 8 has cabins and an ocean recliner area.
• Deck 9 is mainly crew area.
• Deck 10 has a bar and disco area.
• Deck 11 has a helicopter landing pad.

The Superfast IV entered service on 1 April 1998 on Superfast Ferries' Patras to Ancona service.^[1] In March 2002 the Superfast IV was sold to TT-Line.

TT-Line took over its new ship at Patras on May 10th, 2002.^[1] The ship was then sailed to the Neorion ship yard on the island of Syros for painting and general overhaul. She was renamed Spirit of Tasmania I.^[1] She subsequently sailed to Hobart, Tasmania, where she was refitted for her new service. On September 1st, 2002 she entered service on TT-Line's Melbourne to Devonport service.^[1]

On the night of September 18th, 2002, large waves and an indicator on the bridge indicating an issue with the bow door forced the ship back to Melbourne. This decision was announced at midnight. It was found that the problem with the bow door was due to a blocked drain. Spirit of Tasmania I departed again the next morning at approximately 6:30 AM, in even rougher conditions than the previous night. Waves reached up to 7 or 8 metres. She finally arrived in Devonport at around 5:00 PM.

In 2015 she was refurbished in Devonport.^[4][5]

During the night of 3 to 4 February 2005 Spirit of Tasmania I ran into heavy seas in the Bass Strait while sailing from Melbourne to Devonport. At approximately 02:00 the seas reached a height of 20 metres.^[1] The seas smashed cabin windows on the starboard bow and subsequently cabin walls were smashed down, flooding cabin decks as high as deck 9 (the deck under the bridge). Many passengers were unaware of the cause of water in their cabins as the water disabled the public announcement system. The captain decided it best to return to Melbourne, arriving mid morning to heavy media coverage. The ship remained in port overnight for temporary repairs and sailed again the following evening for Devonport.^[6]

Media related to Spirit of Tasmania I (ship, 1998) at Wikimedia Commons

• Spirit of Tasmania official website
• Spirit of Tasmania I – Ferries of Tasmania