Gleaner-class gunboat
The "Gleaner" (or "Pelter")-class gunboat was a class of six gunboats built for the Royal Navy in 1854 for use in the Crimean War. Design. The "Gleaner" class was designed by W.H. Walker (who also designed the subsequent and es). The ships were wooden-hulled, with steam power as well as sails, but of shallow draught for coastal bombardment in the shallow waters of the Baltic and Black Sea during the Crimean War. Propulsion. Two-cylinder horizontal single-expansion steam engines built by John Penn and Sons, with two boilers, provided 60 nominal horsepower through a single  screw, sufficient for . Armament. Ships of the class were armed with one 68-pounder smooth bore muzzle loading cannon (SBML), one 32-pounder SBML (originally two 68-pounder SBMLs were planned but the forward gun was substituted by a 32-pounder) and two 24-pounder howitzers.