Data, taken from Breyer, is below. Please notify me of any errors or queries at User_Talk:The Land.

The date given is for the laying down of the first ship in the class (not necessarily the name ship), where any ships were laid down. Where no ships in a class were laid down, but an order for the ship was placed, or a firm intention existed to order a ship, the date is based on the order date or intended laying down date indicated in Breyer. Many of these ships were cancelled or converted before completion. Design studies which never resulted in a construction order are not included.

The displacement figure is the figure Breyer lists as design displacement. This differs from the "standard" displacement defined under the Washington Treaty (which was often mis-declared). Where a ship was subsequently modified, the displacement given is the value when designed; subsequent refits, rebuildings, conversion into an aircraft carrier on the slipway, etc are ignored. The exception to this is HMS Hood, which went such a radical redesign between construction starting and her launch that she is listed as two data points, one as the 1916 design and one as completed in 1920.

Ships begun for another nation, but later bought or seized, are excluded, as are ships which fell under the Washington Treaty definition of "capital ship" but which were defined as cruisers by their respective navies (e.g. the Courageous and Alaska classes).

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