Each consists of a steel lower mast and topmast and timber topgallant and royal mast. They thus fly two topsails (and possibly two topgallant sails) per mast. The lower topgallant sail is immediately above the upper topsail. Many of the jibs' stays meet the foremast just above the fore topgallant. Later full rigged ships split the topsail (and often the topgallant sail) for easier handling. She had a long poop deck, a long bridge house, and a long topgallant forecastle. Priwall was a four-masted steel-hulled barque with royal sails over double top and topgallant sails. All members of the class were flush-decked, but with a long topgallant forecastle. Rigged with royal sails, single topgallant and split top-sails. The forward topgallant mast and topmasts collapsed as the bow was finally crushed. It was rigged with double top and topgallant sails. She lost her topgallant sail and two whaleboats were destroyed, with an additional whaleboat damaged. "Pommern" is so-called "bald-headed barque"&colon; it does not have royals over her upper topgallant sails. It was originally called the "topgallant royal" and was used in light and favorable winds.