you may be able to get it shipped... but it may be difficult as rail standards are
ISO Container Sizes
ISO containers, also referred to as intermodal containers, are used to transport freight throughout the world. ISO containers are designed for transportation by more than just one mode: such as road and rail, or rail and ship. They are spefically design for convenient lifting and movement. The relevevant standard for ISO containers is ISO 668:1995 Series 1 freight containers - Classification, dimensions and ratings
ISO containers are manufactured in standard sizes. The standard width of ISO containers is 8 feet (2.44m ), the standard heights are 8 feet 6 inches (2.59m), and 9 feet 6 inches (2.9m), and the most common lengths are 20 feet (6.1m) and 40 feet (12.19m). The containers are also manufactured in a number of different lengths from 24 feet (7.31m) to 56 feet (17.22m)
and if the boat is 8 feet wide the trailer will be wider... and you may not be able to get it onboard
just some info...
if the train dosent have to use any tunnels you may be able to get it loaded on a flatbed trailer.