Alcarondas

(Quenya. 'glorious-??')

Alcarondas was a mighty golden-and-black many-masted flagship, crafted by the shipwrights of Númenor. It was the flagship of the fleet with which Ar-Pharazôn set out to conquer Valinor, and upon it the Last King of Númenor sat enthroned as he set sail on his ill-fated enterprise. lost in the sea with the rest of the Great Armament.

It was also called the Castle of the Sea.