World’s premier maritime commandos knives. The Argonaut Dive knives are designed to be one of our best and toughest knives. The blade is cut into two styles; the Spartan and the Blunt. The Spartan comes to a spear head point with one side featuring rounded die cut serrations to prevent snags on rope. The Blunt comes to a blunt chisel like tip. One full side of the Blunt blade is die cut with rounded serrations.