Caitlin has five coaches that belong to the Other Railway. They are used for delivering passengers from the Mainland to Sodor.
Charlie once shunted Annie and Clarabel together with Caitlin's coaches by mistake and they experienced some unexpected high-speed adventures.
Caitlin's Coaches are loosely based on Pullman luxury coaches. Spencer's Coaches and Connor's Coaches share the same basis.
They are painted the same colour as Caitlin; fuchsia with light blue and grey lining.