My computer crashed while my cannon was down on runescape i forgot which world i was on have i lost it?

Answer 1

As long as you didn't give it away to another player, you should be able to re-obtain it from Nulodion, located Near Falador - Entrance to Dwarven Mine on Ice Mountain.

Cannon Warranty - So long as you follow this you should be able to re-obtain:

When you set up a cannon and it has been up for a certain amount of time you will notice that cannons disappear after a certain period of time being continuously
set up.

20 minutes after the cannon has been set up, a message appears
that the cannon has almost decayed. 25 minutes after the cannon has
been set up, or 5 minutes after the warning message, the cannon will
decay (disappear).

However, the decay timer can easily be restarted by picking up the cannon and re-assembling it again.

The decay effect is not based on the number of cannonballs shot, but based on the decay timer as stated above.

The cannon's decay is a one-time event, not a continuous degrading associated with declining performance, such as in crystal
equipment a Crystal bow and a Crystal shield.

The cannon is equally effective at all times. Cannons that do decay are not lost forever, but rather may be re-obtained for free from Nulodion

Note: The fastest way to get to Nulodion is to cast Lassar Teleport (an Ancient Magicks teleport).

Alternatively, players may teleport to the monastery using a charged Combat Bracelet and run to Nulodion, or they can choose to run from Edgeville or Falador If a player dies while a cannon is set up, the cannon stays set up at the location.

It is a common belief that cannons are lost upon death, but in this case the cannon may easily be re-obtained for free.

If a player dies while a cannon, cannon parts, or cannonballs are in the inventory,
these items are lost, unless the player is able to re-obtain them from
the a Gravestone.

Note: Nulodion will not hand out a replacement cannon if the cannon or cannon parts are banked, set up, or dropped.