The Ponrabbel Boilertrumpet is a cross-dimensional portal equipped airship.
Motive power is supplied by Fromholder and Song Magnetohydrodynamic Steam cylinders and Eventide Co. Stirling cycle electical generators.
The dimensional portholes make use of zero-point vacuum extruders to provide access to otherwhen times and locations.
Era-compatible communication platforms are available for messaging to all relevant dimensions.
The "old PB" (as she is called by crew) runs a regular passenger and trans-shipping packet service across the Everywhen.