Spelljammer

Spelljammer A spelljammer was a type of magically powered vessel that could travel great distances, even into the Sea of Night. Each ship had a magical helm or "captains-chair" that allowed a suitably powerful mage to pilot the ship. Some spelljammers were also capable of traveling to other planes of existence.

Description
Spelljammers varied enormously in design, but many contained common elements. One such element that was present in a variety of spelljammers were fan-shaped sails, whose purpose was to harness the flow of the phlogiston, or, if within a planet's atmosphere, the wind.

History
Spelljamming technology had existed for a very long time. For example, early historical accounts from the Second Age of Calimshan described three beholder colony ships crashing into the Alimir Mountains in Tarsakh of &minus;2381 DR. There were also myths from the same era about "chariots in the air" and "monstrous flying birds and insects" that led some scholars to postulate that these too were spelljamming craft.

Many of these vessels (and vessels like them) still existed on Faerûn in the mid-14 century DR. The elves of Evermeet maintained a small fleet of them, while the derivatives of these strange and mighty vessels could be seen flying openly over the southern nations of Nimbral and Halruaa.