Tag Archives: 5-inch gun

Navy Quietly Fires 20 Hyper Velocity Projectiles Through Destroyer’s Deckgun

Navy Quietly Fires 20 Hyper Velocity Projectiles Through Destroyer’s Deckgun

Guided-missile destroyer USS Dewey (DDG-105) transits the Pacific Ocean while underway in the U.S. 3rd Fleet area of operations. US Navy Photo

Last summer USS Dewey (DDG-105) fired 20 hyper velocity projectiles (HVP) from a standard Mk 45 5-inch deck gun in a quiet experiment that’s set to add new utility to the weapon found on almost every U.S. warship, officials familiar with the test have told USNI News. Read More

Updated: Navy Researching Firing Mach 3 Guided Round from Standard Deck Guns

Updated: Navy Researching Firing Mach 3 Guided Round from Standard Deck Guns

USS Ross (DDG-71) test fires the MK45 5-inch lightweight gun on April 30, 2015. US Navy Photo

USS Ross (DDG-71) test fires the MK45 5-inch lightweight gun on April 30, 2015. US Navy Photo

CORRECTION: This post has been updated to include a new statement from Naval Sea Systems Command that changes one previously given to USNI News revising the planned speed of hyper velocity projectile fired from a Mk 45 naval gun from Mach 5 to Mach 3.

The U.S. Navy’s deck guns could take on new relevance if ongoing tests to fire a guided round at three times the speed of sound from their muzzles are successful, USNI News has learned. Read More