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In sailing and boating, a vessel's freeboard is the distance from the waterline to the upper deck level, measured at the lowest point of sheer where water can enter the boat or ship. [1] In commercial vessels, the latter criterion measured relative to the ship's load line, regardless of deck arrangements, is the mandated and regulated meaning. [2]
They were low-freeboard, steam-powered ironclad vessels, with one or two rotating armored turrets, rather than the traditional broadside of guns. The low freeboard meant that these ships were unsuitable for ocean-going duties and were always at risk of swamping and possible loss, but it reduced the amount of armor required for protection.
The low freeboard of the galley meant that in close action with a sailing vessel, the sailing vessel would usually maintain a height advantage. The sailing vessel could also fight more effectively farther out at sea and in rougher wind conditions because of the height of their freeboard.
Freeboard is also reduced for ships that have large openings in the hull and open cargo spaces such as Roll-on/roll-off car carriers. [ 6 ] According to the Annexes to the convention, also taken into account are the potential hazards present in different zones and different seasons and additional safety measures concerning doors, hatchways, etc.
These were low-freeboard vessels intended for local, coastal defense. They were badly overweight when completed, and as a result suffered from serious problems, including belt armor that was fully submerged when the ships were fully loaded, a tendency to ship excessive amounts of water, and poor handling characteristics.
USS Oregon (BB-3) was the third and final member of the Indiana class of pre-dreadnought battleships built for the United States Navy in the 1890s. The three ships were built as part of a modernization program aimed at strengthening the American fleet to prepare for a possible conflict with a European navy.
The Royal Sovereigns had reverted to a higher freeboard after several classes of low-freeboard vessel had been constructed, the last being the Trafalgar class. Low freeboard had been popular for around ten years since it required less armour and made a smaller target for gunfire to hit, although it had the disadvantage that it reduced ...
This was one of the changes which led to the vessels being 600 tons overweight, causing an increase in draught of a foot. The Trafalgars were the penultimate low-freeboard battleships built for the Royal Navy. This design had been favoured for several years because it reduced the size of the target that the ships presented to enemy guns in ...