Thunder Dolphin

Thunder Dolphin (サンダードルフィン) is a steel roller coaster at the Tokyo Dome City Attractions amusement park, which is part of Tokyo Dome City in Tokyo, Japan. The ride was designed and constructed by Intamin. At 80 metres (262.5 ft) tall, Thunder Dolphin is one of the tallest continuous circuit roller coasters in the world, currently ranked number 10. Following an incident in which a 25 centimetres (9.8 in) long bolt fell from the ride while in motion on 5 December 2010, injuring a 9-year-old visitor,^[1][2] operation of the ride was suspended until 1 August 2013, when the ride reopened.^[3][4][5]

Thunder Dolphin
Thunder Dolphin's Lift Hill
Tokyo Dome City Attractions
Location	Tokyo Dome City Attractions
Park section	LaQua
Coordinates	35°42′23″N 139°45′12″E
Status	Operating
Opening date	May 1, 2003
Cost	$37,000,000
General statistics
Type	Steel
Manufacturer	Intamin
Designer	Werner Stengel
Model	Mega Coaster
Lift/launch system	Cable lift hill
Height	80 m (260 ft)
Drop	66 m (217 ft)
Length	1,066 m (3,497 ft)
Speed	130 km/h (81 mph)
Inversions	0
Duration	1:30
Max vertical angle	80°
Capacity	1,660 riders per hour
G-force	4.4
Height restriction	130 cm (4 ft 3 in)
Thunder Dolphin at RCDB

Thunder Dolphin's 1,066.8 metres (3,500 ft) long course passes through both a hole in the LaQua building, and through the Big-O, the world's first centerless Ferris wheel. Thunder Dolphin has a maximum speed of 130 kilometres per hour (81 mph).

An ascending train at Thunder Dolphin