
1) Water transport
Found on
https://www.crosswordclues.com/clue/self-discharger

A self-discharger (or self-unloader) is a ship that is able to discharge its cargo using its own gear. The most common discharge method for bulk cargo is to use an excavator that is fitted on a traverse running over the vessel`s entire hatch, and that is able to move sideways as well. Lake freighters on the Great Lakes use conveyor-based unloadin....
Found on
http://en.wikipedia.org/wiki/Self-discharger
No exact match found.