FWIW:
car builders hatchet: hatchets that were made with basically the same head as a rig builders hatchet but were fitted with a regular length handle. They were originally made for use in constructing wooden railroad box cars and later adopted for use in constructing crates and for concrete form work.
rigging hatchet: Originally used when building wooden oil rigs, the rigging hatchet was heavier, had a checkered face and an 18 inch long handle. The longer handle was shaped like a curved axe handle that permitted it to be used with either a “chocked” grip or full length for maximum reach and striking force. The style was adopted for use in heavy construction. (also: Rigster hatchet, rigger’s hatchet.)
Rigster hatchet: (slang) a term used by some tradesmen when referring to a rig builders hatchet. (see: rigging hatchet)
http://www.yesteryearstools.com/Yesteryears Tools/Glossary: Axes, Edge Tools, etc..html
Bob