Longest water coaster

The longest water coaster is Mammoth at Holiday World & Splashin’ Safari in Santa Claus, Indiana, USA. Its track has a total length of 537 m (1,763 ft) and the capacity for a total of 11 six-passenger round boats travelling simultaneously up and down the 3.65-m-wide (12-ft) channel and tunnels and over seven drops. Mammoth was inaugurated on 11 May 2012.

Mammoth's greatest drop is a 45 degree-angle measuring 9.75 m (32 ft) in height. A magnetic metal plate is attached to the underside of every boat.