The rigging consisted of a single mast with a square mainsail and a topsail.
Some also carry a topsail above the uppermost or only spanker, called the gaff sail.
The lowest square sail was the course, the next sail up the mast was called the topsail, the next the topgallant sail.
A jack-yard topsail may also have the aforementioned vertical yard, although this makes for a very large topsail.
To conserve fuel (coal) she was also originally rigged as a topsail schooner.
Oddly, the sprit rigged mainsail was often accompanied by a jib and a topsail.
She was rigged as a barkentine with double topsail yards; standing rigging was galvanized charcoal-iron wire.
She was topsail schooner-rigged for auxiliary sail power.