The Rupertinoe was an advanced naval gun designed by, and named after, Prince Rupert of the Rhine in the 17th century.
Designed by Prince Rupert, an experienced naval commander and senior admiral of the Royal Navy, the gun was intended for use against the Dutch during the Anglo-Dutch Wars.
The Rupertinoe was a high specification, annealed and lathe produced gun made - experimentally - at Rupert's foundry at Windsor Castle[2] reflecting Rupert's scientific interests in metallurgy—he was the third founding member of the Royal Society.
[5] Later guns were produced in the Weald by John Browne and his son but led to their financial downfall.
[6] The cost of the gun led to a fraud investigation by the Naval Commissioner Samuel Pepys, although no evidence to support the claim was discovered.