The Ironclad Board was an advisory board, established by the Union, in which year, in response to the construction of the "CSS Virginia" by the Confederacy during the US Civil War,primary goal of the Ironclad Board was to develop more battle-worthy ("ironclad") ships, including the USS Monitor, an iron-hulled steamship?
1861
Title: USS Monitor
Passage: USS "Monitor" was an iron-hulled steamship.  Built during the American Civil War, she was the first ironclad warship commissioned by the Union Navy.  "Monitor" is most famous for her central role in the Battle of Hampton Roads on 9 March 1862, where, under the command of Lieutenant John Worden, she fought the casemate ironclad  (built on the hull of the former steam frigate USS "Merrimack" ) to a standstill.  The unique design of the ship, distinguished by its revolving turret which was designed by American inventor Theodore Timby, was quickly duplicated and established the monitor type of warship.
Title: Ironclad Board
Passage: The Ironclad Board was an advisory board established by the Union in 1861 in response to the construction of the "CSS Virginia" by the Confederacy during the US Civil War.  The primary goal of the Ironclad Board was to develop more battle-worthy ("ironclad") ships, leading to the construction a number of innovative designs, including the USS Monitor.  The Board consisted of senior naval officers Commodore Hiram Paulding, Commodore Joseph Smith, Commander Charles Henry Davis and assistant Secretary of the Navy Gustavus Vasa Fox.
Title: Central battery ship
Passage: The central battery ship, also known as a centre battery ship in the United Kingdom and as a casemate ship in European continental navies, was a development of the (high-freeboard) broadside ironclad of the 1860s, given a substantial boost due to the inspiration gained from the Battle of Hampton Roads, the very first battle between ironclads fought in 1862 during the American Civil War.  One of the participants was the Confederate casemate ironclad CSS "Virginia" , essentially a central battery ship herself, albeit a low-freeboard one.  The central battery ships had their main guns concentrated in the middle of the ship in an armoured citadel.  The concentration of armament amidships meant the ship could be shorter and handier than a broadside type like previous warships.  In this manner the design could maximize the thickness of armour in a limited area while still carrying a significant broadside.  These ships meant the end of the armoured frigates with their full-length gun decks.
Ironclad Board USS Monitor