Titanic fan Louie Parker built a Lego model of the hulking liner after memorising YouTube clips of the doomed ship.
The 7kg, metre-long creation, using thousands of plastic bricks, took 10-year-old Louie, who has autism, just three weeks.
He is fascinated by the ship, which went down in the Atlantic on its maiden voyage in 1912 with the loss of more than 1,500 lives.
And he aims to take his model to show pals at his specialist school and to recreate the sinking in the pool.
His mum Cherie, a former paralegal from Torquay, Devon, said: “He was working on it from the moment he got home to when he went to bed. We had to buy extra bricks.
“The Titanic is his interest. He’s seen the film and is always watching YouTube.
“He did the model from his head from videos he’d seen. Louie has a great memory. He initially loved trains and built his own model railway in the shed. Then he turned to ships.”
Louie said: “I’m really interested in the Lusitania and Queen Mary and Queen Elizabeth. But I think the Lusitania may be too complex, so my aim is to make either one of the others or an even bigger Titanic.”
Louie hopes to get the official 9,090-brick Lego Titanic – costing £554.