Certainly not more than one hundred with efficacy. There may be an historical account of the the earning of the nickname "Old Ironsides", which would give an estimation of cannons of the 1800s capabilities.
Load th cannon UP and fire it!
get the explosives under the yellow tooth and fire the cannon on the left
To fire the cannons at the Pirate Outpost, you need the Cannon Starter Kit (fuses), which is at the top of the main mast. Climb up from the cannon at the lower left of the skull, jumping over the pirate, and onto the roof of the Cannonry at upper right. To the left is the mainmast and the Cannon Starter Kit. On the way back down, shove the small barrel of explosives off the mast, to the left, then down into the water. Placing it under the Golden Tooth, then shooting it, will reveal the hidden map piece.
You push the barrel of explosives & push it under the giant skull. Then fire the lowest possible cannon.
If the cannon is seen to fire six seconds before the shot is heard, the cannon is just over 1900 metres (about 2100 yards) from the observer.
Jump up the mast to reach the two rolling cannon. As each of them rolls back into the wooden box, click on the side and it will lock in place. The third pirate continues to roll around. Go to the cannon in the small boat at the bottom, and when the pirate rolls out of the way, click it to fire.
Swim left from the trading area, beneath the giant stone skull. One cannon is at the far left and you can climb up from there. To fire a cannon, you need the Cannon Starter Kit (fuse) from the very top of the outpost's mast.
Fake cannon that could not fire.
the cannon balls are right under the cannon in poptropica. the cannon is in the room right off of the great hall to the left you fire the cannon by taking the candles and setting them on fire and putting the candle by the rope of the cannon.
To fire the cannons at the Pirate Outpost, you need the Cannon Starter Kit (fuses), which is at the top of the main mast. Climb up from the cannon at the lower left of the skull, jumping over the pirate, and onto the roof of the Cannonry at upper right. On the mainmast to the left, under the flag, is the Cannon Starter Kit. On the way back down, shove the small barrel of explosives off the mast, to the left, then down into the water. Placing it under the Golden Tooth, then shooting it, will reveal the hidden map piece.
You have to fire the free cannon (lower middle, in the dinghy) to break the bottle. But you have to get the three sleeping pirates out of the way. Climb onto the masts and click each of the two boxes when the cannons roll into them, locking them in place. Go down to the cannon in the dinghy and wait for the third pirate to roll left, out of the way, and click the cannon to fire.
Swim left to the bottom left cannon, climb up, and jump over the hostile pirate. Cross to the right and climb up and above the Cannonry. To the left, below the pirate flag, is a "cannon starter kit" (fuses) which will fire any of the 4 cannons on the outpost. There is one in particular to use, the one at lower left. On the way down the mast, push the small barrel of explosives off the yardarm to the left, and into the water below. Swim it out to just under the giant Golden Tooth. Go left and fire the cannon, trying to hit the barrel. If you do, the blast shakes loose the Golden Tooth and reveals the map piece.