MK 75 OTO Echoes
The crew of Coast Guard Cutter Northland conducts a live firing of the MK 75 76mm weapons system while underway, on September 20, 2020, in the Atlantic Ocean. (Photo: USCG)
As we have discussed, the MK 75 OTO Melera 76/62C Compact gun has been sunset by the U.S. Navy and USCG after a 50-year-run, with the Ordnance Shop at the Coast Guard Yard taking ownership of the remnants of the program, tapped to support the guns on FFG-7 frigates and 378-foot cutters transferred overseas.
The CG Yard Ordnance Repair Facility recently completed a five-month overhaul of an MK75 gun mount for an international partner.
“This effort is part of a larger Foreign Military Sale Program, which prioritizes robust national security partnerships and U.S. global leadership.
The Yard is the only certified MK75 overhaul facility in the U.S. The Ordnance shop manufacturers and repairs critical components from decommissioned Navy donor guns, since these parts are no longer manufactured. After the overhaul, the weapon is boxed and shipped for transit to the international partner.”
Before:
After:
And packed up for return shipment.
Death in a box!
As to why it takes five months to refirb one of these mounts:
It takes that long because the shop has to remove/ship it, pre test, completely tear down, sand blasted all parts, send part for plating, source or get parts made that are no longer in the stock system, repair all corrosion, overhaul all hydraulic components with new gaskets/hardware, paint / repair everything, start assembling have QI come in for major sub component test, finish assembly, start the ISMAT / ISMEP testing, round 100 rounds, package the system, ship it, install it on new cutter/ship then Test it again on the ship and this is completed with up to a 3-4 man team while training new workers. It’s a big team effort, but rewarding the workers in that shop are really top-notch.