Depth charge 40mm ammunition
This interesting grenade, manufactured by Bulgarian firm ARCUS Co., is designed to combat frogmen. The AR476 is fired from standard 40mm launchers at the area where combat divers are suspected to be underwater. When the projectile hits the water, a time deployed fuse is activated.
Many thanks, again, to Lusaka for the photo and info.
This is actually a brilliant idea! It’s a lot better than peppering the water with MG fire.
Great potential for a bit of fishing, too!