Admiralty is the alternate name for Dockyard or Navy Board models.

The 16th century British Navy did not build their own ships; these were built by contractors, after approval from the Lords of the Admiralty  a collection of aristocrats, nobility, and civil servants.  Since these people could not read plans, proposed ships were presented to them in the form of a model.

28" long x 12" tall (with bowsprit and mast boom it would be 40")       $ 497