Category Archives: Weapons

“Army 2023: Russian firm Gidropribor displays new torpedo” –Navy Recognition

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New torpedo on the Gidropribor booth at Army 2023. (Picture source: Zvezda)

Navy Recognition reports, a Russian firm has developed a compact torpedo,

“It can target submarines, unmanned underwater vehicles, which is very relevant today, and surface ships…220mm in caliber, varies in length from 2.1 to 2.4 meters and weighs between 100 and 140 kg.”

I suspect the Russians saw what the US was doing with the Common Very Light Weight Torpedo (CVLWT) and figured we had a good idea.

The CVLWT is reportedly 6.75″ (171mm) in diameter, about 85″ (2.16 meters) in length, and weighs about 220 pounds (100 kilos).

I contend the Coast Guard could use the CVLWT to forcibly stop even large merchant ships that might be used by terrorists or for other nefarious purposes, probably without sinking it, which might lead to serious unintended consequence.

“Army Long Range Missile Launcher Spotted on Navy Littoral Combat Ship” –USNI

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An Army MK 70 missile launcher on the flight deck of Littoral Combat Ship USS Savannah (LCS-28) in San Diego, Calif. Photo obtained by USNI News

The USNI News Service reports,

A portable missile launcher capable of firing a combination of long-range anti-ship and anti-air weapons was spotted this week undergoing testing aboard a Littoral Combat Ship in San Diego, Calif., according to photos provided to USNI News.

Based on a series of photos reviewed by USNI News, the launcher is a Lockheed Martin MK 70 containerized vertical launching system that is capable of firing both a Raytheon Standard Missile 6 and a Tomahawk Land Attack Missile. It was spotted on the flight deck of Independence-class LCS USS Savannah (LCS-28), which was pier-side in San Diego, according to a USNI News review of the images.

If you can operate Army missile launchers from an LCS you can also operate them from a Coast Guard cutter.

This could be particularly useful in Alaska where there are no Navy ships and limited road infrastructure. Launchers could be flown to meet cutters already in Alaskan waters long before Navy ships could reach the area.

Guns as Counter-UAS Weapons

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A couple of videos from a The Drive post, “Gepard’s 35mm Cannons Blast Russian Drones Out Of The Sky In First-Person Video.”

TheFlakpanzer Gepard was not designed specifically for UAS. It was designed in the ’60s and fielded in the ’70s to protect against low flying aircraft like attack helicopters and the Soviet counterpart of the A-10 attack aircraft, the SU-25 Frogfoot.

The twin 35 mm guns are much more powerful weapons than the 25 and 30 mm weapons mounted on the Mk38 gun systems. Presumably in the counter UAS role they are using the “AHEAD” anti-missile rounds, rounds that might have been designed specifically to take out UAS, that fire 152, 3.3 gram tungsten metal sub-projectiles. The guns have a very high muzzle velocity (3,400 ft/sec for the AHEAD round) and a much higher rate of fire (550 rounds per minute per gun).

With the AHEAD round, the projectile weight is 1.65 lbs. (0.750 kg) compared with 0.406 lbs. (0.184 kg) for the 25mm HEI and HEI-T rounds, and 0.79 lbs. (0.362 kg) 30mm HEI-T round so the potential radius of destruction is substantially greater.

Still the 30mm with airburst ammunition should be effective, but it will probably require more rounds to get the job done and will have shorter effective range. Unless the 25mm has an airburst round it is unlikely to be effective.

It might be worth considering that while the Gepard’s firecontrol is radar, the Mk38 firecontrol is electrooptic. I can’t say unequivocally that that is a disadvantage, but it might be. Surely the drone builders will attempt to include countermeasures against both types of firecontrol.

How Bofors 57 mm Mk3/Mk110 Naval Gun Reload Works –Video

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Thought this video was interesting enough to pass along.

This makes it clear why the nominal “220 round per minute” rate of fire for the 57mm Mk110 is only good for short periods. There can be up to 120 rounds on the mount but there may be interruptions to reload after 20 or fewer rounds. Frequently different types of ammunition are loaded in the left and right sides of the mount ammunition feed system, so there may be only 60 or fewer rounds of a particular ammunition type on the mount.

The linked information above includes a note for the 57mm Bofors 57 Mk2 which appears to share the same reload mechanism as the Bofors 57mm Mk3 (Mk 110 in US service) “Time to reload 120 rounds: 2 minutes”. It appears reloading the two 20 round ready service cassettes that move with the gun requires the gun to at or near maximum elevation. It is not clear if partially filled ready service cassettes can be topped off, I would hope that would be the case. The time to elevate, reload and return to firing position could be critical. Hopefully you will not wait until all 120 rounds on the mount are expended before reloading.

Thanks to Lee for bringing this to my attention.

Guns for Ukrainian Island Class Patrol Boats.

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Ukrainian Navy Island-class patrol boats, formerly of the U.S. Coast Guard, conduct maritime security operations in the Black Sea off the coast of Odesa, Ukraine.
UKRAINIAN NAVY

This was on the U.S. Department of Defense Daily Digest Bulletin for Aug. 7, 2023.

Safe Boats International LLC,* Bremerton, Washington, is awarded a $22,271,829 firm-fixed-price modification to previously-awarded contract N00024-21-C-2201 for the exercise of options for procurement and installation of six Gun Weapon Systems onto the Island Class patrol boats with spares. Work will be performed in Tacoma, Washington, and is expected to be completed by October 2024. Foreign Military Financing (Ukraine) funds in the amount of $22,271,829 will be obligated at time of award and will not expire at the end of the current fiscal year. The Naval Sea Systems Command, Washington, D.C., is the contracting activity. (Awarded Aug. 3, 2023)

Five Island class 110 foot patrol boats were transferred to Ukraine.  One of them has been sunk.

Previously vessels of this class were armed with crew served Soviet era 25 mm guns.

This is reported as modification of an existing contract, so I presume at least one vessel has already been rearmed. Thinking two guns per vessel, then six gun systems will go on three additional vessels. So, at least four ships with two guns each. Presumably, they would be 25 or 30 mm guns, hopefully the new 30mm Mk38 Mod4.

The announcement does say, “Work will be performed in Tacoma, Washington, and is expected to be completed by October 2024.” If this is true, these are additional boats. The Coast Guard still has many available for transfer. It is also possible there might be only one gun per vessel. All we know for sure is in the quote above.

In Dec. 2019 there was a suggestion that these vessels might be fitted with anti-ship cruise missiles, but there has been nothing further to indicate it has or will happened.

“Coast Guard begins production phase of medium endurance cutter service life extension program” –CG-9

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Coast Guard Cutter Spencer approaches the pier at Coast Guard Yard in Baltimore. Service life extension program work on the medium endurance cutter will last 15 months. U.S. Coast Guard photo.

Below is a release from the Acquisitions Directorate, CG-9.

I would note that all six ships getting this service life extension are “B class” 270s, built by Robert Derecktor Shipyard, Middletown, RI, numbers 905, 907, 908, 909, 911, and 912. Unlike the first four “A class,” these have a stronger flight deck, capable of supporting H-60s.

This release clarifies a lot about the SLEP program, but there are still some unknowns.

Reportedly the 76mm Mk75 gun and presumably the associated Mk92 firecontrol system will be removed. A Mk38 gun mount would presumably replace the 76mm, but it is not clear if any additional radar would be added to replace the air search and approach control functions that were provided by the Mk92. “Harriet Lane served as the gun weapons system prototype,” but I have not seen any post conversion photos of Harriet Lane that might show us the new sensor/weapon combination. Harriet Lane is expected to change homeports from Norfolk to Honolulu early in FY2024. Harriet Lane is an “A class” 270.

I also wonder if the SLQ-32 electronic warfare systems will be retained? Will the gun be the same 25 mm we have on the Webber class, or will at least some get the 30mm Mk38 mod4?

Coast Guard begins production phase of medium endurance cutter service life extension program

July 14, 2023

The service life extension program (SLEP) for the 270-foot Famous-class medium endurance cutters (MECs) moved to the production phase July 1 with the start of industrial work on Coast Guard Cutter Spencer.

Four main areas are being addressed during this SLEP, encompassing electrical, weapons system, engine and structural areas. Coast Guard Cutters Seneca and Harriet Lane served as prototypes for the electrical and structural work; Harriet Lane served as the gun weapons system prototype. Work on Seneca ran from July 2021 to March 2022; Harriet Lane work began March 2022 and is scheduled to be completed in August 2023.

Spencer will be the first hull to receive all major work items, including new main diesel engines. The work is scheduled to last 15 months.

SLEP work on the 270-foot MECs is planned through spring 2028 on five additional hulls: Legare, Campbell, Forward, Escanaba and Tahoma. The work involves targeted system replacement to address system reliability, supportability and obsolescence. SLEP work is completed at Coast Guard Yard concurrently with regular maintenance activities to achieve overall schedule and cost savings. The work will facilitate continued MEC operations during the service’s transition to the future offshore patrol cutter class.

In-Service Vessel Sustainment is the Coast Guard’s strategic class-by-class evaluation of its vessels to determine what major maintenance and upgrades are necessary for them to reach or extend their service lives.

For more information: In-Service Vessel Sustainment Program page

“JUST IN: Marine Corps Ramps Up Production of Remote Weapon Stations” –National Defense/ Maybe Something the Coast Guard Could Use

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National Defense reports,

The Marine Corps is preparing for the transition to full-rate production of the Marine Air Defense Integrated System Remote Weapon Station, according to a July 10 press release from manufacturer Kongsberg.

The Marine Air Defense Integrated System Remote Weapon Station, otherwise known as MADIS RWS, is a critical system in the Marine Corps Ground-Based Air Defense portfolio, which provides protection from drones with increased lethality against evolving threats.

Since this is a Marine system, built to be exposed to salt air and sea spray, there is no reason it could not also be a naval mount.

Currently no Coast Guard ships seem to have an effective hard kill system to use against Unmanned Air Systems.

The Marines seem to think they have an effective system.

It looks like a version of the MADIS system could be a very useful addition to some Coast Guard Cutters. The Navy might even want a few, including perhaps for the protection of Military Sealift Command Ships.

The war in Ukraine is showing us how useful and potentially dangerous even small Unmanned Surface and Air systems can be. The threat is not limited to Ukraine or Southwest Asia.

The MADIS system and its Remote Weapon Station is light enough to be used on virtually anything the Coast Guard calls a cutter. In addition to defense against UAS, this system could provide basic air defense against other potential threats and defense against swarming small craft.

The Webber Class:

We have already seen the sensors used in the MADIS system on the Webber class WPCs in PATFORSWA, but even those cutters don’t have an effective, installed hard kill system.

The addition of the MADIS remote weapon station to PATFORSWA FRCs would not only allow the cutters to engage UAS but would also provide them with protection against various air threats.

While perhaps less urgent, mounting the system on all Webber class would allow them to offer this protection to other potential targets.

Offshore Patrol Cutter port quarter

The Offshore Patrol Cutter (OPC): 

There are two troubling issues with the OPC with regard to their armament.

  • Aside from the .50 calibers, on most bearings, there is only one weapon that can bear on a target. The lack of redundancy is a serious weakness.
  • Protection against even the most basic air threats, including UAS, is weak at best.

I have always been a bit concerned that the arc of fire for the single 25mm Mk38 Mod3 gun is severely limited. It’s mounted on top of the hangar, but what appear to be satcom antennas on either side may limit the firing arc to less than 180 degrees.

Replacing the Mk38 mount, the two .50 caliber in remote weapon stations, and the crew served .50 caliber guns with three properly sited MADIS style remote weapon stations (RWS), would ensure redundant coverage of 360 degrees, provide a more robust air defense (including against cruise missiles), and reduce the number of different weapon systems that need to be maintained.

The National Security Cutters (NSC):

The NSCs are nominally better armed than the OPCs because they have a 20mm Phalanx rather than a 25 Mk38. They would certainly be better off if a pair of the MADIS RWS replaced the .50 caliber crew served weapons. The additional visual sensors might also be useful. It might even be preferable to replace the Phalanx with a third RWS.

Polar Security Cutter and Others: 

The remote weapon system does not necessarily require the air search radar system. This system is light and compact enough to arm virtually any cutter from patrol boats to icebreakers including buoy tenders that do occasionally do law enforcement and would benefit from the electro-optics that are part of the Remote Weapon Station.

Other Considerations: 

Other Remote Weapon Station combinations might be preferable. I would like to see a more powerful gun than the M230 combined with Hellfire or APKWS in addition to Stinger, but this is in the Navy’s system now and provides a unique combination of capabilities. Training and maintenance course should become available.

The gun in the remote weapon system, the XM914E1 30mm that fires the 30x113mm does have a lower muzzle velocity (805 m/s (2,641 ft/s)) than the 25mm M242 (1,100 m/s (3,600 ft/s)) but the 30mm has a higher rate and airburst ammunition not currently available for US 25mm guns. The 25mm might be a better anti-surface weapon but not by much and the air burst ammunition and particularly the Stinger make me strongly favor the MADIS system.

From Back Left: 40mm grenade casing, 30x173mm (A-10/M44), 30x113mm (M230), 25x137mm (M242/Mk38 gun mount), 20x103mm (Phalanx), 50 BMG
300Blackout (typical rifle round), 9mmx19 (typical pistol round)

The air search radars used with the MADIS system would provide redundancy for air search and helicopter approach control. It could also be used to support UAS operations. Reportedly the radar has a range of up to 30km and an instrumented range of 50km at altitudes from 30ft to 30,000 feet.

Stinger may be an old system, but it has a proven capability. It is likely to be replaced with a new and even better system in the near future.

“Our Best Look Yet at the Marines’ New Loitering Munition Toting Drone Boat” –MSN

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HERO 120 launcher on Long Range Unmanned Surface Vessel (LRUSV)

We talked about the HERO 120 loitering munition before. I noted it might be just what the Coast Guard needs to deal with the potential threat of small, fast, highly maneuverable craft.

While man portable single round launchers are probably all Coast Guard units might need (other than perhaps Bahrain based PATFORSWA Webber class cutters), we now have photos of an eight-cell launcher mounted on a Metal Shark optionally manned 40-foot, Long Range Unmanned Surface Vessel (LRUSV).

The Hero 120 is the largest offering in UVision’s “tactical” line of loitering munitions, weighing around 27 and a half pounds, including a 10-pound warhead. It uses an electric motor to drive a propeller at the rear and has a maximum endurance of around 60 minutes.

U.S. Marine Corps Lt. Gen. Brian W. Cavanaugh, the commanding general of Fleet Marine Force, Atlantic, Marine Forces Command, Marine Forces Northern Command, and Marines with 3d Marine Littoral Regiment, 3rd Marine Division, examine the manual controls to the Long Range Unmanned Surface Vessel, Joint Expeditionary Base Little Creek-Fort Story, Virginia, April 27, 2023. A LRUSV is an optionally manned vessel capable of extended travel and transporting loitering munitions that accurately track and destroy targets on sea or land. Metal Shark is designing, building, testing and implementing the LRUSV system under another transaction authority agreement with Marine Corps Systems Command to primarily serve as an intelligence, surveillance, and reconnaissance platform.
© Provided by The Drive

While it looks increasingly likely this system will become common in the Navy/Marine Corps inventory, it is perhaps important to remember that this eight-round launcher is not necessary to launch these. Loaded single round launchers are small enough to be man portable and would impose no heavy loads on the platform at launch. Certainly, some training would be required, but they could be stored in a group, station, or ship’s armory and be issued when needed.

Missing Anti-Ship Cruise Missiles

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Long Range Anti-Ship Missile (LRASM)

Myself and others have suggested that it might be a good idea to equip US Coast Guard cutters with anti-ship cruise missiles (ASCMs).

While I think cutters should be fitted for launchers of at least eight ASCMs, so that in wartime they might swamp the defenses of an enemy combatant with a relatively robust air defense, they don’t need to carry that many all the time. (The new FFGs will carry up to 16 ASCMs.) For defense against a possible terrorist attack using a medium to large ship, two LRASM, AGM-158C Long Range Anti-Ship Missile, with their large warhead and target selectivity, would probably suffice. For sensitive international peacetime missions, they might need or want to carry none at all.

Certainly not everyone agrees, “U.S. Coast Guard’s VADM Linda Fagan (Pacific Command) answers why the Large Coast Guard Cutters Do Not Up-Arm” by Peter Ong, but there may be another reason the idea has not been accepted.

A Defense News report has a revealing quote,

“We need about 1,000 to 1,200 [long-range anti-ship missiles] if you believe the unclassified wargames,” Gallagher adding, noting the U.S. currently has less than 250 in its inventory.

That may only refer to the Long Range Anti-Ship Missile, but there may be a shortage of anti-ship missiles. That could explain a lot, including why no ASCMs on cutters; why no ASCM armed surface combatants; why so slow to arm LCS with cruise missiles, why many Destroyers apparently have no ASCMs. DOD is going to fill their highest priority needs first.

The US Navy has about 110 surface combatants (cruisers, destroyers, and LCS). If each were armed with 8 ASCMs that would require 880. Submarines may carry a relatively small number of ASCMS, but ships are not the primary users of ASCMs. Aircraft have that role.

Each Air Force B-1Bs can carry up to 24 LRASMs. LRASM and NSM are also to be carried by Navy F/A-18s and Air Force, Navy, and Marine F-35, and by P-8 Maritime Patrol Aircraft. A fully loaded Aircraft Carrier might require well over a hundred missiles.

Until recently, ASCM procurement rates have been modest. Apparently, more missiles are coming.

The rapid consumption of high-tech munitions in Ukraine has apparently convinced many we need deeper magazines.

The Pentagon’s $170 billion procurement budget request ― touted as the largest ever ― would use a new “large lot procurement pilot” strategy to maximize production capacity for several munitions used across the services: Lockheed Martin’s Joint Air-to-Surface Standoff Missile Extended Range (JASSM-ER) and Long-Range Anti-Ship Missile (LRASM) ― and the Raytheon Technologies-made RIM-174 Standard Missile (SM-6), AIM-120 Advanced Medium Range Air-to-Air Missile (AAMRAM).

Though not in the pilot program, the Pentagon is also using multiyear contracting to buy roughly 103 Naval Strike Missiles at $250 million. The Marine Corps’ new, low-signature Marine Littoral Regiments and their Navy/Marine Corps Expeditionary Ship Interdiction System are slated for 90 of the ground-based missiles, which Raytheon manufactures.

Procuring 103 missiles over five years still looks like a pretty slow pace to me, considering China is apparently threatening to attack Taiwan in 2027 and we have a capacity for producing hundreds of missiles per year. If Taiwan is attacked in 2027, it will be a target rich environment and those missiles in the out years will be too late.

In 2021 Defense News reported, there is no production bottleneck delaying the rapid deployment of large numbers of Naval Strike Missiles (NSM).

“Demand is not an issue. If they suddenly come out and they say we need 200 a year, 300 a year, 500 a year, we can do that,” Schreiber added.

Lockheed is doubling their production capacity.

Perhaps when magazines are filled, the question of missiles for cutters will be reconsidered.

“In focus: the 50 cal heavy machine gun in Royal Navy service” –Navy Lookout

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British navy sailor fires burst using gun mounting system ASP (Agile, Small-deflection, Precision) armed with a .50 heavy machine gun. (Picture source British Royal Navy)

Navy Lookout has a post about .50 cal guns that goes into the history of the caliber in the Royal Navy, but the real news is that they have made the decision to completely replace the 7.62mm Mk44 (M134) mini gun, which as a rate of fire of 2,000 to 4,000 rounds per minute, with the .50 caliber effective March 2023.

The post makes reference to the 2021 tests of the “Agile, Small-deflection, Precision (ASP)” mounting on board HMS Argyll, but apparently there has been no decision regarding upgraded mounts for the gun.