Many production and specialty boats such as racers are shipped on container ships. The mast
is taken down and a special cradle
is constructed that has standard container lock down fittings. The the container ship leaves an open area midships on top of the stacks of normal containers. The boats are loaded into this "well" area giving good protection from all directions. You normally have to set up all the different contractors to prep the boat
and deliver it to the container ship terminal.