Others unfurled the main course and main lower topsail.

Lower topsail, if fitted.

The names of the five square sails set on the foremast are (from top to bottom): Royal, Topgallant, Upper Topsail, Lower Topsail, and Course.

Spars are steel on the lower and topmasts (course, lower topsail and upper topsail yards) and timber above this (topgallant and royal yards).

She carries five yards on each mast (moving up: Course, Lower Topsail, Upper Topsail, Topgallant and Royal), and a total of 18 sails.

A square-topsail ketch carries one or more square-rigged topsails (commonly two, an upper and a lower topsail) on its mainmast, in addition to its mainsail, mizzen sail and jibs.

The flagship did well enough, her fore topmast staysail set and the main lower topsail taken up goosewing-fashion, presenting a fan shape to the squalls, the remainer heavily lashed to prevent its chafing fully open.

A full rigged ship has either single or double ("split" upper and lower) topsails on all masts, the single or lower topsail being the second sail above the deck and the upper topsail where so rigged being the third.