Cannonballs

Deadly iron cannonballs are necessary to fuel the numerous cannons seen throughout the realm.

Description
When propelled at high speed through the use of powder kegs, these destructive metal spheres are capable of sinking most waterborne craft, or blasting down stubborn gates and doorways. Ship-mounted cannons have existed since Ultima I, but only in the time of  Ultima V did land-based cannons (and piles of cannonballs) appear. The acquisition of custom-made steel cannonballs fashioned by Andrew Carnegie was an essential component of finishing  Martian Dreams, allowing access into Argyre by blasting open its metal gates.

Trivia

 * Throughout Ultima V, cannons had unlimited shots -- even when not placed next to a supply of cannonballs.
 * Only in Ultima VII can the player pick up the cannons and use them elsewhere.