Mk46 Mod1 being installed on the USS San Antonio (LPD-17)


Northrup Grumman:

Northrop Grumman rigger Albert McCoy assists in mounting the MK46 Mod 1 weapon system onboard USS San Antonio, the lead ship in the U.S. Navy’s new LPD 17 class of amphibious transport dock ships built by the company’s Ship Systems sector. The ship has been delivered and is undergoing final preparations before departing for her commissioning ceremony, scheduled for Jan. 14, 2006 in Ingelside, Texas. Northrop Grumman Ship Systems currently has four more LPDs in production at its Pascagoula and New Orleans facilities.

The MK46 Mod 1 is a remotely operated naval gun system using a 30mm high-velocity cannon and second-generation thermal day-night sight for close-in ship’s protection. Built by General Dynamics, MK46 Mod 1 is the naval derivative of the turret originally developed for the U.S. Marine Corps’ Expeditionary Fighting Vehicle.

For the high-res version, see the DoD’s Transformation site. Recall that the San Antonio has been plagued by a number of issues.


  1. Interesting that it’s remotely operated, yet has a seat in it. I suppose that’s a back-up control – or is it just not very remote?

  2. Sitting inside the most obvious RPG target on the ship probably doesn’t seem like a very popular idea. Like being the ball turret gunner at the back of a B-17.

  3. If you’re in a MK46 Mod 1 weapon system turret aboard the USS San Antonio AND you’re within someone’s RPG range, you’ve got bigger troubles than just being an obvious target…