Tag Archives: mcm

Chasing down those 21st Century mines

This is the current minehunting system:


U.S. 7TH FLEET AREA OF OPERATIONS (March 23, 2017) Mineman 1st Class Sean McDermott prepares to launch a mine neutralization vehicle aboard the mine countermeasures ship USS Warrior (MCM 10) during Exercise Foal Eagle 2017. The exercise is a series of joint and combined field training exercises conducted by Combined Forces Command and U.S. Forces Korea ground, air, naval and special operations component commands. (U.S. Navy photo by Mass Communication Specialist 2nd Class Jermaine M. Ralliford/Released)

This is Northrop Grumman’s AQS-24B combined with the Atlas ARCIMS unmanned minehunting system

Then we have the Unmanned Influence Sweep System (UISS) in NAVSEA tests recently off South Florida for its mine countermeasures mission

Kingfish and Dragon Master

After WWII, minesweeping took to the air, at least in the U.S. Navy, and by the 1960s helicopter-borne sleds were the name in the game (see RH-3A’s on USS Ozark in a past Warship Wednesday for more on that).

Current tech involves the MH-53E Sea Dragon towing the Mk-107 sled. The thing is, the Navy just has two dozen ‘Dragons left and they are scheduled to be retired by 2025.

So what is the replacement plan for the ship-based Airborne Mine Counter Measure (AMCM) mission?

Last month the folks at the Naval Surface Warfare Center, Panama City Division, dunked a UUV into the drink via chopper.

naval-surface-warfare-center-panama-city-division-dragon-master-air-crew-scientists-and-engineers-successfully-deploy-a-mk-18-underwater-unmanned-vehicle
They used a “Dragon Master” MH-60S helicopter of HX-21 to drop a MK18 Mod 2 Kingfish underwater unmanned vehicle into the drink. Kingfish has been around since 2011 and deployed in 2013 with the 5th Fleet for tests. The 600-pound, 12-foot long UUV is outfitted with several different

The torpedo-shaped 600-pound, 12-foot long UUV is outfitted with several different pencil and side-scan sonars attuned to mine hunting but can also be used for route recon, debris field inspection, salvage work and just about any other underwater tasking. Based on the Kongsberg Maritime Hydroid REMUS 600, it can remain on task for 24-hours before needing a recharge and dive to 2,000-feet.

The test seemed to go well, by all accounts.

“Once in a hover, the crewman streamed the mass model and adapter into the water and initiated release of the MK18 MOD2 mass model. Once the MK18 MOD2 mass model was released from the UUV adapter the crewman retrieved the adapter back to storage position on the side of the aircraft,” said NSWC PCD MH-60S Integration Lead Tim Currie. “The total operation, from liftoff to touchdown, took 18 minutes. The release of the mass model and recovery of the UUV adapter took approximately three minutes.”

More here

Now they just have to test how to get it back out.

Congress not impressed with LCS mine hunting program

Chief of Naval Operations Adm. Jonathan Greenert tours the Lockheed Martin undersea systems facilities in Riviera Beach. While there, Greenert viewed a littoral combat ship remote minehunting system test module and underwater autonomous vehicles. U.S. Navy photo by Chief Petty Officer Peter D. Lawlor

Chief of Naval Operations Adm. Jonathan Greenert tours the Lockheed Martin undersea systems facilities in Riviera Beach. While there, Greenert viewed a littoral combat ship remote minehunting system test module and underwater autonomous vehicles. U.S. Navy photo by Chief Petty Officer Peter D. Lawlor

The Littoral Combat Ship is a sausage program that was envisioned to replace the Navy’s diverse minehunters/sweepers, frigates and patrol craft with 50+ ships on a single hull that could do it all (after all, any ship can be a minesweeper once, right?) through a series of plug-and-play modules.

Remote Minehunting System (RMS) to be used on the LCS, in theory

Remote Minehunting System (RMS) to be used on the LCS, in theory

Well what we have almost 20 years into the program are two hulls (Freedom and Independence classes) that can do some of the same tasks as the frigates and patrol craft (except for ASuW or ASW against a modern opponent), but there’s a thing about that $706 million mine module program…

From USNI

At issue are recent reports on the reliability of a core component in the MCM package, the Remote Minehunting System (RMS) — comprised of the Raytheon AQS-20A towed array sonar and the Lockheed Martin remote multi-mission vehicle (RMMV).

The 7.25-ton semi-submersible RMMV — designed to deploy from the LCS and autonomously scout mines with the AQS-20A — in particular has had a history of persistent reliability problems.

SASC Chairman Sen. John McCain (R-Ariz.) and ranking member Sen. Jack Reed (D-R.I.) cite an early August memo signed by director of the Office of Test and Evaluation (DOT&E) Michael Gilmore that “assessed the current Remote Mine Hunting System and RMMV reliability as being 18.8 hours and 25.0 hours between mission failures… which is well below the Navy’s requirement of 75 hours” and that the Navy provided “no statistical evidence that the [system] is demonstrating improved reliability, and instead indicates that reliability plateaued nearly a decade ago.”

Worse, the Navy put their low-mileage Osprey-class coastal minehunter (with some hulls just being eight years old) on the chopping block back in 2007 (Taiwan, Egypt and Greece picked them up lighting fast) and is planning on retiring the Avenger-class mine sweepers and vaunted MH-53 Sea Dragon MCM helos in just a few years, making the LCS/MCM program “it” for U.S. Navy mine sweeping.

Doh

 

Yum! Mines!

Clear Horizon 2014

WATERS SOUTH OF THE KOREAN PENINSULA (Oct. 21, 2014) Mineman 1st Class (SW) Douglas Reynolds gives commands to the crane operator during deployment of the Mine Neutralization Vehicle (MNV) AN/SLQ 48 aboard the Avenger-class mine countermeasures ship USS Chief (MCM 14). The MNV is used to identify and neutralize simulated mines during training as part of exercise Clear Horizon 2014.

Clear Horizon is an annual bilateral exercise between the U.S. and Republic of Korea navies designed to enhance cooperation and improve capabilities in mine countermeasure operations. (U.S. Navy Photo by Mass Communication Specialist 1st Class (SW/AW) Frank L. Andrews / Released)

US Doubling Minesweepers in the Persian Gulf

The US Navy owns 14 minesweepers, arguably the lowest number since 1942. Of those 14, 4 are in the Persian Gulf stationed at Manama, Bahrain. Literally within site of Iranian waters.

Now another 4 are on the way.

Good move if you ask me.

All of the US Navy’s minesweepers are pushing 25-years of age and were paid for in the Regan administration. They are of the Avenger Class

Builder: Peterson Shipbuilders, Sturgeon Bay, Wis.
Propulsion System: four diesels
Propellers: two
Length: 224 feet (68.28 meters)
Beam: 39 feet (11.89 meters)
Draft: 11,5 feet (3.5 meters)
Displacement: 1,312 tons
Speed: 14 knots
Armament: Mine neutralization system, two .50 caliber machine guns

Crew: 8 Officers, 76 Enlisted