Turbolaser

"We count thirty Rebel ships, Lord Vader, but they're so small they're evading our turbolasers."

- An Imperial Lieutenant, to Darth Vader, during the Battle of Yavin

A turbolaser was a powerful laser cannon turret stationed aboard large craft and space stations, such as the Death Star and the Death Star II. Spacecraft that were equipped with turbolasers included the Tantive IV and the Malevolence.

A turbolaser's effectiveness was weakened drastically as the bolt moved through layers of a planet's atmosphere, making them largely ineffective even against unshielded targets. However, this could be ameliorated by moving the ship deeper into the planet's stratosphere.

Some turbolaser had a limited range of effectiveness, as seen when the Supremacy weapons were unable to cause damage to the Raddus from a long distance.

Thorilide, mined from the Inner Rim moon Cynda, was a vital resource in a turbolaser.