Supertanic Liner is available in the City Center at level 33.

Reward: Flower Ship Decoration

Quest Steps

Step 1/11: No Timer
Collect profits from Lighthouse 1 time
Buy 4 expansions
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Step 2/11: 12 Hours
Produce 16 lots of Wool (Textile Factory)
Ask friends for 3 Lifebuoys
Ask friends for 4 Life jackets
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Step 3/11: 16 Hours
Collect profits from Coffee House 9 times
Collect 10 Bags of chips (Farm =>Potato)
Collect 25 Ring cakes (Bakery)​

Step 4/11: 48 Hours
Collect 700 goods
Collect 15 Ropes (Textile Factory => any fabrics)
Ask friends for 6 Lifeboats
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Step 5/11: 24 Hours
Build 6 Hostels (Store => Residences)
Collect profits from Hostel 12 times
Collect 10 Leather sofas (Colonial House, Hostel, Villa with a pool, Apartment House, Redbrick House, Skyscraper, Penthouse)
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Step 6/11: 12 Hours
Produce 20 lots of Squashes (Farm)
Collect 5 Sandwiches (Pub)
Ask friends for 5 Packs of juice
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Step 7/11: 16 Hours
Put on 2 shows at the Concert Hall
Hold a beach volleyball tournament 2 times
Collect 10 Trophies (Tennis Court, Volleyball Court, and Stadium)
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Step 8/11: 36 Hours
Help your friends with 75 buildings
Collect 3 Seals (Administration)
Ask friends for 7 Forms
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Step 9/11: 24 Hours
Train 5 Mechanics (College)
Collect profits from any buildings 70 times
Ask friends for 5 Repair kits
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Step 10/11: 36 Hours
Earn 60,000 coins
Collect 12 Cans of paint (Family House, Ranch, Hotel, Townhouse, Comfortable House)
Produce 20 lots of Linen (Textile Factory)
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Step 11/11: 12 Hours
Collect profits from Flower Kiosk 20 times
Collect 36 Bouquets (Flower Kiosk)
Ask friends for 1 Compass
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Your rewards: 30 coins, 3 superbucks, and Flower Ship decoration