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“I heard you! Snoring! Fit to blast birds out of the sky and chuggers off the rails."
"Ha, don't be ridiculous."
"Well, if you don't believe me, how about we go the Repair Shed right now and get this sorted out."
"Alright, you're on. And while we're there, we'll get Morgan to check your hearing.”
―Chatsworth and Harrison

Rock-a-Bye Chatsworth is the thirty-eighth episode of the first season.


Chatsworth is exhausted after working all day and wants to take a nap. It turns out to be harder than expected: the trainees playing keep him awake and Vee later asks him to do an extra run to Tootington. Meanwhile, Olwin is afraid of getting her paintwork scratched at the stone quarry while loading up. When she runs away, Vee asks Harrison to make her run. While showing off to Wilson, Harrison gets rocks in his system, causing him to make a loud snore after he goes to sleep. His snoring keeps everyone up all night, especially Chatsworth, who resides on the cabin next to him. In the morning, Chatsworth demands Harrison to go to the Repair Shed. The Chug-Scan finds the rocks inside him and Harrison has to do everyone's work while the whole of Chuggington sleeps.


Rolling Stock






  • Going by production order, this is the thirty-second episode of the first season.
  • This episode's title is a reference to the song, "Rock-a-Bye Baby".
  • This marks Karen's last speaking role until the third season episode, Wobbly Wheels.


  • On a few occasions throughout the episode, the tile flooring around the double decker roundhouses' cabins is replaced with a grass texture.
  • Irving has Dunbar's voice in the US and Italian dubs.
  • When Koko is spinning on the turntable for the first time, Wilson's underbite clips through the rails.
  • When Wilson asks Harrison if he come with him to the Quarry, some of the shadow graphics on Harrison's underbite become misplaced.
  • Part of Olwin's valence beneath her right eye is missing in the scene of Chatsworth returning to the roundhouse at night.
  • In the aerial shot of the Depot at night, the track leading towards the roundhouse entrance abruptly ends.
  • Dunbar's shed doors clip through the rails.
  • During the last shot of the episode, Olwin is missing her headlight.

Other Languages

Language Title
French Pas de repos pour Christian
German Schlafloser Christian
Japanese ハリソンの大いびき
Polish Kołysanka dla Cezarego
Spanish La Canción de Roca de Christian (Latin America)

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