Brief Description:  The Lantaka (also spelled rentaka) is a portable bronze swivel cannon from Maritime Southeast Asia. Mounted on merchant vessels, warships, and fortress walls, it was famously utilized by indigenous groups (such as the Tausug, Maranao, and Iranun) and traders to defend against pirates and conduct naval skirmishes.

Design and Construction:

Material and Casting: Cast using bronze, brass, or sometimes iron. Native metalworkers, such as the famous pre-colonial cannon maker Panday Pira, crafted these highly advanced weapons using complex lost-wax and mold-casting techniques.

Mounting Mechanism: The defining feature of the lantaka is the integrated swivel yoke and pin located at the trunnions. This allowed the barrel to pivot 360 degrees, providing easy tracking and rapid aim-and-fire in close-quarters naval combat.

Dimensions: These weapons were relatively lightweight (averaging 14 to 30 pounds) and typically measured between 20 to 40 inches in length.

Firing and Ammunition:

Munitions: While they could fire solid cannonballs to damage wooden vessels, they were deadly when loaded with scattered projectiles. Firing grapeshot, pea gravel, nails, or shattered debris essentially turned the lantaka into a massive, highly destructive shotgun.

Breech and Muzzle: While traditional muzzle-loaders were common, highly sophisticated breech-loading versions also existed, allowing the gun crew to reload rapidly by swapping out chambers.