I wouldn't sail this ship if I were you
9080 Trains
-9080.1 Diesel
-9080.2 Electric
–9080.25 Toy trains
-9080.3 Steam
–9080.12 Quaint ye-olde steam trains
—9080.122 Used primarily to visit Santas with dodgy beards
–9080.13 Actual working steam trains in places that still do that kind of thing
-9080.4 Nuclear-powered
–9080.42 Runs through secret tunnels between bunkers in the event of a global emergency
–9080.44 Train will explode when passing through $city unless stopped by action hero
-9080.5 Solar-powered
–9080.52 For which inclement weather is a valid excuse for service cancellation
–9080.55 Still running when there is nothing left on the Earth’s surface but rails and dirt and sunlight
-9080.6 Other tangible power source
–9080.61 Powered by LNG
–9080.62 Powered by any old burnable junk that can be stuffed in the furnace
–9080.64 Handcarts
–9080.65 Powered by people putting their legs through holes in the carriages and running really fast
–9080.66 Not powered but can at a pinch be pushed by another train
–9080.67 Trains that are on boats
-9080.7 Powered by magic
–9080.71 But still looks like quaint ye-olde steam train
-9080.8 Powered by thought
–9080.81 Space train pods on the magic woo quantum rails of the Future
–9080.88 Trains of thought
-9080.9 Trains of paranormal origin
–9080.91 Ghost underground trains
—9080.912 Of a mysterious silver colour
—9080.913 Crammed to the gills with deceased commuters
—9080.914 Still used by live commuters, who have not noticed
–9080.92 Zombie trains
—9080.921 Trains whose parts will rise up from junkyards all over the world when the zombie train apocalypse comes