Don't take this to the bank, but here are a couple of reasons I understand pirates were reluctant to use their cannons.
They usually use their weapons to blow up their enemies ships after they rob it.
Swords, guns, cannons
Modern day pirates typically use rifles, machine guns, and RPGs.
They used cannons and other types of guns.
It has 3 cannons
Pirates used a number of different kinds of weapons. They used a variety of swords, daggers, rifles, pistols, and cannons.
No now they use guns but very few pirates actually exist now. The hotspots are places around Africa e.g samarlia
they used cannons knives and guns.
When travelling the seas, they used cannons mostly and when battling on land or on the deck of the ship(s), they would use swords, daggers etc. Maybe guns.
In 'Sid Meier's Pirates!', the bronze cannon upgrade for your ships increases the accuracy of your cannons. This is crucial in battle against military-type ships and larger ships, which have a decent accuracy themselves.
party cannons are
You have to buy a new ship to use cannons.
In the ship in a bottle, jump up behind the pirates on the sails and click the boxes to trap the rolling cannons.