Why Did USCGC Midgett Embark an ASW Helicopter For RIMPAC 2022?

Posted on August 20, 2022 by Chuck Hill

PACIFIC OCEAN (July 30, 2022) U.S. Navy Petty Officer 1st Class Humberto Alba, a naval aircrewman tactical-helicopter, attached to Helicopter Maritime Strike Squadron (HSM) 37, deployed on U.S. Coast Guard Legend-class cutter USCGC Midgett (WMSL 757), looks down at a USCGC crewmember after taking off during flight operations during Rim of the Pacific (RIMPAC) 2022. (U.S. Coast Guard photo by Petty Officer 3rd Class Taylor Bacon)

The Drive reported on Cutter Midgett’s participation in RIMPAC 2022 with a look at flying Navy MH-60R ASW helicopters from the National Security Cutters. I wanted to talk about why this might have been done, but first let’s clarify something.

This and other reports may have left the impression that a Coast Guard Officer leading a task force at RIMPAC was a first and that it was the first time a Navy H-60 had flown from an NSC. Neither is not really the case.

During RIMPAC 2020, USCGC Munro embarked a Navy MH-60S, the surface warfare and logistics counterpart to the MH-60R. It is not clear if they ever hangared it.
Reportedly USCGC Bertholf headed a Task Force during RIMPAC2018.
In RIMPAC 2014 USCGC Waesche also headed a task force. “The maritime interdiction operation involving the Chinese destroyer, frigate and oiler was referenced in December by the Navy as being under the Coast Guard cutter Waesche and including two Royal Brunei Navy ships, a French frigate, a U.S. frigate and the Pearl Harbor-based cruiser USS Port Royal.”

Since NSCs are skippered by Captains, while the US Navy and our allies captain Burke class DDGs and similar ships with commanders, it is not uncommon for the Coast Guard commanding officer to be the senior officer among the captains of a group ships, if there is no commodore assigned. So, frequently, the Coast Guard CO is task force commander by default. This happened to 327 skippers early in WWII as well. For a period, Spencer’s CO was an escort group commander until the Navy assigned a Commodore. Fortunately Spencer got some good training allowing her to sink two of the less than 40 U-boats sunk by US surface ships.

So what was the reason an ASW helicopter was embarked on Midgett? The Coast Guard’s motivation and the Navy’s?

Could be as simple as because they could, but I don’t think so. Both services expected to get something out of this.

Interoperability is always nice, so Navy helo on CG cutter allows both to get some training. Still think there must be more to it than that.

The Navy wants to more widely distribute their forces so this might have been something of a dry run to see what they could do in terms of command and control from a Frigate sized ship and crew.

For the Coast Guard, it could have been an opportunity to get used to operating an H-60 with folding tail from a Bertholf class. It was certainly a rare opportunity to exercise LINK 16. We might have wanted to find out if a system included in the MH-60R should also be included in Coast Guard H-60s.

Or it might have been a first small step toward reviving a Coast Guard ASW mission. Unless the National Security Cutters could operate an ASW helicopter there would be no point in trying to add an additional ASW capability such as a towed array. Confirming ship/helo compatibility would be a first step, along with identifying what changes might be necessary to provide for the helicopters’ additonal needs for weapons, sonobuoys, etc.

Maybe Supporting MH-60R helicopters is reason enough

The US Navy has alot of H-60s. The numbers I have seen are 237 MH-60S (the surface warfare and logistics type) and 291 MH-60Rs (the multi-mission/ASW type). It is probably a bit less than that now, but about 500 plus the MQ-8 helicopter drones that they will also want to take to sea.

The Navy obviously does not have as many ships capable of hosting H-60s as they would like. Every US Navy surface combatant commissioned in the 21st century (DDG and LCS–there have been no cruisers or frigates) has had the capability to hangar two H-60s, and the planned FFGs will have this capability as well.

Navy requirements seem to be always changing,

The proposed 355 ship navy included 104 large surface combatants (cruisers and destroyers) plus 52 small surface combatants (frigates and LCS).
The latest from July 2022 calls for 96 large and 56 small.

Let’s say a minimum of 116 ASW capable escorts, probably about 120. Right now they have about 90 with no ASW capable LCS, 22 cruisers all now 22 to 36 years old (five of which are slated for retirement in the current budget), and about 70 Burke class DDGs of which 13 will reach 30 years old by the end of 2025 while the first FFG is not expected until 2026. Clearly the number is ASW capable escorts is unlikely to increase significantly any time soon and number may actually decline.

So how many MH-80R/MQ-8 spots are there?

The ten carriers typically host about six MH-60R. The cruisers and Burke class flight IIA and III have two each, but 28 of the Burke class DDGs (Flights I and II), almost a third of our large surface combatants, have flight decks and LAMPS ASW electronics, but no hangar. So roughly 72 ships with 204 spots. Eleven National Security Cutters would provide 22 additional spots, about a 11% increase. The Offshore Patrol Cutters protentially offer another 25 spots about 12% more.

With the Navy hoping to more widely distribute their surface combatants, rather than keeping them firmly attached to a carrier, a couple of additional MH-60Rs could substantially improve ASW capabilities of a small surface action group (SAG).

“Coast Guard awards $103 million contract to Inventech Marine for up to 200 over the horizon boats” –WorkBoat

Posted on August 19, 2022 by Chuck Hill

New Over the Horizon boat design. Inventech Marine Solutions rendering

WorkBoat reports on the award of a contract for construction of up to 200 “Over The Horizon Cutter Boats” (CB-OTH V) to Inventech Marine Solutions (IMS) of Bremerton, WA.

We had a Coast Guard news release on this contract award earlier, that talked about the selection process and where the boats will go, but the Workboat article gives much more detail about the tech that went into the boat and why it was chosen. Perhaps most significantly,

The performance of the boat during the in-water demonstration event was noteworthy in that it averaged 30 knots in SS3, the highest of any of the boats, while eliciting comments from the operators that it was the most comfortable and capable.

Thanks to Paul for bringing this to my attention.

“RIBCRAFT Delivering On $80 Million Navy Contract” –Marine Link

Posted on August 18, 2022 by Chuck Hill

Marine Link reports,

RIBCRAFT will build up to 278 of the 7-Meter rigid inflatable boats worth approximately $80 million. This is purported to be the largest single contract based on number of boats ever awarded by the U.S. Navy.

Each vessel is powered by a single Steyr SE266E40 diesel engine with Bravo Two X Mercruiser outdrive and equipped with a Briartek man overboard indicator system (MOBI), and forward M60/M240 weapon foundation. With a full load of 18 sailors, the 7-meter RIB will have a sprint speed of 25 knots.

These boats will be built alongside the U.S. Navy Expeditionary 11-Meter RIB that RIBCRAFT is currently building at its Massachusetts facilities. Together these contracts have a total value of over $120 million, making the company New England’s most significant boat manufacturer.

These appear a bit less capable than the water jet powered Coast Guard 8 meter “Over the Horizon” cutter boat, more like the Cutter Boat, Large, employed on WMEC210s and 225 foot buoy tenders.

“The Pacific Islands” –Congressional Research Service (CRS) Report

Posted on August 18, 2022 by Chuck Hill

Estimated exclusive economic zones (EEZs) of Pacific Island countries and territories (PICTs). The EEZs of countries that are the Parties to the Nauru Agreement are shown in darker blue. Note that not all EEZs of PICTs have been officially delineated under the United Nations Convention on the Law of the Sea. Source: Patrick Lehodey

The Congressional Research Service (CRS) has published a two page “IN FOCUS” brief on “The Pacific Islands” of Micronesia, Melanesia, and Polynesia. Like all my links to CRS reports, this link will always take you to the latest version. It has already been updated at least once, 17 August, 2022.

Given the increased Coast Guard activity in the region, the report may provide useful background. The topics discussed are:

Overview
Geopolitical Context
The United States and the Region
The Freely Associated States
International Assistance
China’s Influence
Security Challenges
Self Determination

“Marines Commemorate 80th Anniversary of the Battle of Guadalcanal” –Seapower

Posted on August 16, 2022 by Chuck Hill

Guadalcanal, Solomon Islands, edited by M.Minderhoud

The Navy League’s Magazine “Seapower” reports on a ceremony to commemorate the 80th anniversary of the start of the Guadalcanal campaign, held in Honiara, Solomon Islands. Quite properly Vice Admiral Andrew Tiongson, Commander, U.S. Coast Guard Pacific Area, was there representing the Coast Guard.

USS Hunter Liggett (APA-14) c1944.jpg

USS Hunter Liggett (APA-14) c. 1943-44

The Coast Guard manned transport USS Hunter Liggett was flagship of Task Force 62.1 which transported the 1st Marine Division, with Maj. Gen. Alexander A. Vandegrift, USMC, Commander ground forces, embarked. The story of Douglas Munro is well know, but there were other Coast Guard heros there as well. Ultimately the Coast Guard would suffer its largest single loss of personnel in the waters of Guadalcanal, when the Coast Guard manned ammunition ship USS Serpens (AK-97) exploded on January 29, 1945, while anchored off Laguna Beach.

Some stories:

The Long Blue Line: Tulagi’s Coxswains–the services 1st Silver Star recipients

The Long Blue Line: The “Green Hell” of Guadalcanal 80 years ago!

NOB Cactus, Guadalcanal, 1942

Gold Dust Twins: The Two Coast Guardsmen Who Saved Chesty Puller’s Marines on Guadalcanal

(U.S. Coast Guard)

“The Marines were being driven back to the beach and many did not have radios to request assistance. A single “HELP” spelled out in T-shirts on the ridge near the beach sent a loud and clear signal to those looking on.”

“This man is the only US Coast Guard recipient of the Medal of Honor”

Joseph Toahty, Pawnee Warrior Of Guadalcanal

Loss of USS Serpens (AK-97), Jan. 29, 1945

“USCGC Mohawk Arrives in Abidjan, Côte d’Ivoire” –SeaWaves

Posted on August 16, 2022 by Chuck Hill

USCGC Mohawk (WMEC-913), Clarence Sutphin Jr. (WPC-1147), and John Scheuerman (WPC-1146)

SeaWaves report,

The Famous-class medium endurance cutter USCGC Mohawk (WMEC 913) arrived in Abidjan, Côte d’Ivoire for a scheduled port visit August 12.

The visit demonstrates the strengthening security cooperation relationship between the United States and Côte d’Ivoire. While in Abidjan, the Mohawk crew will exchange with Côte d’Ivoire maritime forces, including medical response treatment, close quarters combat and casualty care, illegal contraband collection and handling, and Visit, Board, Search and Seizure (VBSS) demonstrations.

Mohawk is forward-deployed to the U.S. Naval Forces Africa (NAVAF) area of operations, while employed by U.S. Sixth Fleet. Mohawk is on a West Africa patrol to demonstrate partnership with regional partners and conduct a routine presence patrol. Since July, the Mohawk has made port calls to Senegal, The Gambia, and Sierra Leone.

This is a continuation of a voyage that initially escorted the last two Webber class WPCs bound for Bahrain, where they replace 110 foot WPBs that have long served Patrol Forces South West Asia (PATFORSWA). Some previous reporting,

“USCGC Mohawk (WMEC 913) arrives in Lisbon, Portugal”–Navy.mil–and Two More FRCs for PATFORSWA, and “USCGC Mohawk arrives in Dakar, Senegal” –SeaWaves July, 2022

This is only the latest visit by a WMEC270 to Africa. Some previous reports:

Exercise Obangame Express 2019 –Capacity Building in West Afric a, Mar. 2019 and “The U.S. Coast Guard’s Mission to Africa” –USNI, Apr. 2019, USCGC Thetis (WMEC-910)

“The Long Blue Line: Operation “Relevant Ursa”–Bear training in West Africa” –Coast Guard Compass, Oct. 2020, USCGC Bear (WMEC-901)

Thetis Escorts FRCs Transatlantic, and “U.S., Spain, Morocco collaborate to conduct rescue at sea” –LANT AREA News Release, Jan. 2022, USCGC Thetis (WMEC-910)

“U.S. Coast Guard participating in Operation Island Chief, Operation Blue Pacific 2022” –News Release

Posted on August 14, 2022 by Chuck Hill

The USCGC Oliver Henry (WPC 1140) crew arrives in Manus, Papua New Guinea, on Aug. 14, 2022, from Guam as part of a patrol headed south to assist partner nations in upholding and asserting their sovereignty while protecting U.S. national interests. The U.S. Coast Guard is participating with partners to support the Pacific Islands Forum Fisheries Agency-led Operation Island Chief and the larger Operation Blue Pacific through patrols in the Western Pacific in August and September 2022. The other two patrol boats are Australian built Guardian class. (U.S. Coast Guard photo by USCGC Oliver Henry)

Just passing along this news release from U. S. Coast Guard Forces Micronesia/Sector Guam.

U.S. Coast Guard participating in Operation Island Chief, Operation Blue Pacific 2022

Editor’s Note: Click on the images above to view more images and b-roll video
or download high-resolution versions.

MANUS, Papua New Guinea — The U.S. Coast Guard is participating with partners to support the Pacific Islands Forum Fisheries Agency-led Operation Island Chief and the larger Operation Blue Pacific through patrols in the Western Pacific in August and September 2022.

“Employing our unique authorities, capabilities, and access within Oceania is a privilege. We are eager to further integrate with our Allies and regional partners to protect national interests and combat illicit maritime activity such as illegal, unreported, and unregulated fishing,” said Capt. Nick Simmons, U.S. Coast Guard Forces Micronesia/Sector Guam commander. “Strengthening governance and modeling professional maritime behavior on the high seas and the surrounding waters is one way to counter predatory activity and reinforce the Pacific as a positive center of gravity and sustainable economy.”

The operation covers a substantial area of the Pacific on the high seas and the exclusive economic zones of the Federated States of Micronesia, Papua New Guinea, Australia, and the Solomon Islands, while renewing relationships bolstered by local knowledge and expertise.

The USCGC Oliver Henry (WPC 1140), a 154-foot Sentinel-class fast response cutter, and crew deployed from Guam are making their first port call of the patrol in Manus, Papua New Guinea. During the patrol, the cutter will also have aerial support from a forward deployed HC-130 Hercules airplane crew from U.S. Coast Guard Air Station Barbers Point and New Zealand Defence Force P3 Orion airplane crew. Where possible, the crew will also conduct subject matter expert exchanges and engagements.

Operation Island Chief is one of four operations conducted annually under FFA. It includes the Pacific waters of 11 participating FFA member nations – Fiji, Federated States of Micronesia, Kiribati, Palau, Papua New Guinea, Nauru, the Marshall Islands, Samoa, the Solomon Islands, Tuvalu, and Vanuatu.

“The Oliver Henry crew are committed to regional collaboration and sharing best practices to strengthen our relationships and information sharing,” said Lt. Freddy Hofschneider, commanding officer of Oliver Henry. “The U.S. Coast Guard has been a dedicated partner in the region for decades. We appreciate the support of our colleagues as we take this ship across vast distances in this region, making some transits and port calls for the first time.”

A significant emphasis of the operation for the U.S. Coast Guard is the ongoing emphasis on fisheries and resource protection.

“The Pacific Ocean is home to some of the world’s most abundant fisheries,” said Simmons. “These fisheries are living marine resources, part of the global food chain, representing food security and an economic engine for many of the Pacific Island Nations. By leveraging our cutters, aircraft, and intelligence professionals, the U.S. Coast Guard continues our strong partnership with the Pacific Islands Forum Fisheries Agency and its members to protect this vital marine ecosystem and ensure continued economic prosperity and a thriving ocean for future generations.”

According to FFA, partners are seeing increasing success through multilateral operations in the Pacific to tackle IUUF. These operations evolved from a focus on protecting against illegal boats entering the fisheries to policing the operations of licensed vessels that haven’t followed the rules and regulations governing their activities. The Pacific region is a vast expanse, and collaboration across the many partners, providing personnel and assets, is crucial to ongoing success.

The Oliver Henry is the 40th Sentinel-class fast response cutter. The ship arrived in Guam and was commissioned along with its sister ships, Myrtle Hazard and Frederick Hatch, in July 2021. In the time since, the crew has participated in several search and rescues cases, completed a counternarcotics patrol off Guam with the Japan Coast Guard patrol vessel Mizuho, and conducted sovereignty and fisheries patrols in the Forces Micronesia/Sector Guam area of responsibility.

For more U.S. Coast Guard Forces Micronesia/Sector Guam news, visit us on DVIDS or subscribe! You can also visit us on Facebook at @USCGSectorGuam.

-USCG-

“Coast Guard releases request for information for medium-range unmanned aircraft systems” –CG-9

Posted on August 13, 2022 by Chuck Hill

Insitu Scan Eagle in Coast Guard colors. Notably the RFI requires, “…the UA shall incorporate low-visibility, counter-shaded paint scheme consisting of FED-STD-595C FS 36320 (or similar) matte gray upper surfaces and FED-STD-595C FS 36375 (or similar) matte gray lower surfaces,” much like an Air Force F-16.

Below is an Acquisitions Directorate (CG-9) statement regarding a Request for Information,

The Coast Guard released a request for information (RFI) Aug. 5 to determine the potential sources and the technical capability of industry to provide Group II and Group III unmanned aircraft systems (UAS), capable of deploying from Coast Guard cutters.

The RFI can be found here.

So what are “Group II and Group III unmanned aircraft systems (UAS)?” Wikipedia identifies the groups and provides examples.

Group II: Maximum weight 21 to 55 pounds (25 kg); Nominal Operating Altitude <3500 feet above ground level (AGL) (1,067 meters); speed less than 250 knots
Group III: Maximum weight <1320 pounds (600 kg); Nominal Operating Altitude < flight level 180 (about 18,000 feet or 5,488 meters); speed less than 250 knots

Notably the Navy’s Fire Scout is a Group IV UAS, so will not be considered. These groups do include both Insitu’s Scan Eagle, currently being used on National Security Cutters and their larger RQ-21 Blackjack. Also included are the V-Bat which has been tested on a Coast Guard WMEC and a number other vertical take-off and landing capable UAS.

The RFI appendix 1, entitled “Draft System Performance Specifications (SPS)” is 11 pages long and provides much more detail. I will mention only some highlights and these are only the minimums, there are also higher objective criteria:

Endurance: 12 hours
Dash speed: 70 knots
Cruise speed: 50 knots
Service ceiling: 3,000 feet
Range: 40 nmi in clear weather, 35 in light rain
The UA shall provide fully automated flight operations, including launch and recovery.
The UA shall have space, weight, and power to concurrently operate: Electro-Optical (EO) sensor, Infra-Red (IR) sensor, AIS, VHF/UHF communications relay, aeronautical transponder, and non-visible IR marker. [KPP]
At an operating altitude of 3,000 feet when the UAS is directly overhead of the target of interest (no slant range), the UA shall be acoustically non–detectable per MIL STD-1474 (series), Level 1 requirements (quiet rural area with the closest heavily used highway and community noises at least 2.5 miles away).

Notably there is no mention of radar or vidar, although Vidar is an EO sensor currently used by Scan Eagle UAS operating from National Security Cutters. There is also this,

The UA shall be capable of accepting modular payloads. Modular payloads are defined as payloads that can be replaced or interchanged with the previously-installed EO or IR payload(s) within one to two hours (elapsed time). Modular payloads may be government provided.

I did find this interesting, “The UA shall launch and recover while a static MH-65 is spotted with blades unfolded on the flight deck.”

The drawings contained in Appendix 2 indicate that these Unmanned Aircraft are intended for Bertholf class “National Security” cutters. Appendix 1 also sounded like these would be contractor operated, as are the Scan Eagles currently being deployed on National Security Cutters.

Since these specs are not too different from the Scan Eagles already being used on National Security Cutters, the Coast Guard may be just checking the competition to see what else is out there. On the other hand, perhaps some of the requirements may not be being met by the Scan Eagle UAS we are currently using. That the RFI provided only 17 days from issue to deadline for response, suggests the Coast Guard had already been been in communications with “the usual suspects.”

Coast Guard releases request for information for medium-range unmanned aircraft systems

Aug. 12, 2022 —The Coast Guard released a request for information (RFI) Aug. 5 to determine the potential sources and the technical capability of industry to provide Group II and Group III unmanned aircraft systems (UAS), capable of deploying from Coast Guard cutters.

The Coast Guard is interested in UAS that include fully automatic flight operations, have a minimum endurance of 12 hours and can be launched and recovered from a cutter flight deck. For Coast Guard mission success, UAS need to be capable of carrying a payload including electro-optical and infrared sensors and communications relay. Technological readiness level and degree of commonality and interoperability with existing Department of Homeland Security or Department of Defense programs are also of interest.

The full RFI is available here. Responses are due by 1 p.m. EDT Aug. 22.

For more information: Unmanned Aircraft Systems Program page

“Coast Guard exercises contract option to build one fast response cutter” –CG-9

Posted on August 12, 2022 by Chuck Hill

CGC BENJAMIN DAILEY, the first FRC stationed in Gulf of Mexico, conducts flight operations with a HH-65 from Air Station New Orleans. Photo by Bigshipdriver

The Acquistions Directorate (CG-9) reports exercise of a contract option to purchace one additional Webber class cutter. I had been under the impression money was in the FY2022 budget for two more.

On December 10, 2021, USCGC Benjamin Dailey (WPC-1123) was heavily damaged during a fire while in drydock in Tampa, FL. I have not heard if she had been repaired. This might be a replacement. Readers’ updates would be appreciated.

I think we still need additional cutters if we are going to open a base in American Samoa.

Coast Guard exercises contract option to build one fast response cutter

Aug. 12, 2022 —The Coast Guard exercised a contract option Aug. 9 for production of one Sentinel-class fast response cutter (FRC) and associated deliverables valued at $55.5 million with Bollinger Shipyards of Lockport, Louisiana.

This option brings the total number of FRCs under contract with Bollinger to 65 and the total value of the Phase 2 contract to approximately $1.8 billion. The FRC built under this option will be delivered in 2025.

To date, 50 FRCs have been delivered, with 48 FRCs in operational service, operating out of 13 homeports.

FRCs have a maximum speed of over 28 knots, a range of 2,500 nautical miles, and an endurance of five days. The ships are designed for multiple missions, including drug and undocumented individuals interdiction; ports, waterways and coastal security; living marine resource protection and enforcement; search and rescue; and national defense. They feature advanced command, control, communications, computers, intelligence, surveillance and reconnaissance equipment; over-the-horizon cutter boat deployment to reach vessels of interest; and improved habitability and seakeeping.

For more information: Fast Response Cutter Program page

30mm as Replacement for the 25mm?

Posted on August 11, 2022 by Chuck Hill

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

We have known for a long time, the 30mm was much more effective than the 25mm even against relatively small vessels. We really did not need the test to show that, physics is very much on the side of the larger round, but the revalation was how ineffective the 25mm using HEI rounds, really was.

More recently, two options that are not available for the 25mm, have made the case for the 30mm even more compelling, an airburst round that can be used against UAVs and a swimmer round that is much more likely to penetrate the hull if if it hits the water short of the target, subjecting the target to flooding.

Then we saw reports that the Navy was procuring a new, very different Mk38, the 30mm mod4.

Recently, one of our readers, Secundius, in an in comments discussion of the status of the ALaMO guided 57mm projectile program, pointed to a document that reports the funding of Navy Department ammunition purchases. (Incidentally the ALaMO round is in service now. MAD-FIRES is in a 27 month, third stage of development, that should end, January 2023.)

Using the document, I took a look at “other ship gun ammunition,” specifically looking at 25 and 30mm ammunition, in hopes of seeing evidence of fielding of the 30mm Mk38 Mod4.

If I am reading Vol. 1-127 correctly, the Navy bought only target practice rounds for the 25mm in FY2020 and 2021, and no 25 mm rounds in FY2022. On the other hand, in regard to 30mm ammunition, in addition to 120,010 training rounds purchased FY2020-2022, they bought 14,177 Armor Piercing Fin Stabilized Discarding Sabot Tracer (APFSDS-T) rounds in FY2021 and 8,245 in FY2022. 3,000 Counter UAS rounds were purchased in FY2021.

We know the Polar Security Cutter will get the Mk38 Mod4 and that, reportedly, existing installations of the Mk38 Mod2/3 are not expected to be replaced by the new mount.

I feel strongly that if the US ever experiences a terrorist attack, using a medium to large ship, the key asset, that will oppose them, will be a Webber class WPC.

Other US armed forces are not prepared to respond to this threat. There are no Navy ships near most of our ports. Our larger cutter will be either on distant patrol or unable to get underway in time. The Webber class will likely be the most heavily armed cutter available.

To be able to avoid being disabled by improvised armaments such a threat might bring along, e.g. ATGM, heavy machine guns, or anti-tank and anti-aircraft guns, we need to be able to engage from at least 4,000 yards.

Reportedly the 30mm MK258 MOD 1 APFSDS-T Swimmer round, “provides a short time of flight, high impact energy and maximum penetration capability out to more than 4 000 m,” so it should meet the range requirement. The effective range of the 25mm is only 2,700 yards (2,457 m) using HEI projectiles. It is probably over 3,200 yards using the APDS projectile.

The Coast Guard can make a strong case, that ships armed with nothing larger than the 25mm Mk38, specifically the Webber class, should either, be given the more capable 30mm Mk38 Mod4, or have short range missiles like APKWS or Hellfire mounted on the existing mounts (which might be the simplest and best solution). Similar missiles have already been mounted on the Israeli mount that is the Mk38 Mod2/3 and on the MSI mount that is the Mk38 Mod4. (My thoughts on countering such a terrorist threat and what we can do with what we have now are here.

To validate the capability of the 30mm with the APFSDS-T round, we really ought to do a SINKEX, using only this weapon from a range of 4000 yards or more. While a larger target might be more appropriate, the Coast Guard could offer up one or two of its decommissioned Island class 110 foot WPBs as targets for the 2024 RIMPAC. The 30mm used for the SINKEX might not be on a Coast Guard vessel, but perhaps if the first OPCs emerge with the 30mm Mk38 Mod4, they could have the honors. Using an OPC in a Coast Guard SINKEX would be a great debut for the new class, and if the 30mm proves ineffective, after expending the equivilent of an FRC’s ammo allowance, the OPC could then use the 57mm Mk110, perhaps with ALaMO ammunition.

We need to see how effective our weapons and their ammunition really are.

We have already had sort of a SINKEX using the 25mm, and it did not turn out well.