Adelaide’s Cruise 1323 with John Dean has given away one of their largest ever cash prizes – $15,600 – with the Mystery Sounds being correctly guessed for the first time since March 2015.

This is the largest prize money Cruise has given away since at least 2012.

Ferial Machtoub of Modbury took home the goods, after correctly guessing the sound was the locking or closing of the porthole window on The One and All – a tall ship based in Adelaide.

She was, obviously, thrilled.