Trimaran Patrol Boat

Our friend at NavyRecognition offers this video of the CMN Ocean Eagle 43 prototype built for the Navy of Mozambique, in sea trials in what are reported to be State 5 seas.

There is no displacement listed, but, except in beam, this vessel is notably smaller than the Webber class WPCs (143 ft vs 154 for the Webber class). It has a smaller crew (7) and accommodations (15), but otherwise appears to have similar capabilities with a speed of 30 knots, a range of 3000 miles at 20 knots, and a 7 meter RHIB in a ramp at the stern.

They also advertise a proposed mine hunter version that is more limited in speed and dispenses with the small UAS flight deck in favor of unmanned underwater vehicles for mine hunting and destruction. Assuming the same hull is used, the dimensions for both are 43.6 meter in length, 15.7 meter beam, and two meter draft.

When it comes time to replace the 87 footers, perhaps we should consider something similar, though dealing with the much greater beam might be a bit of a challenge in some places.

Coast Guard to Get New Gun Mount, Mk38 Mod3

For photos, see this DefenseMediaNetwork post.

It looks like the Coast Guard will be getting a new gun mount soon. Defense.gov reports a new $30,556,246 contract for Mk38 Mod3 gun mounts that includes “fiscal 2015 weapons procurement (Coast Guard) funding in the amount of $5,341,232 …(and)… fiscal 2014 weapons procurement (Coast Guard) funding in the amount of $152,781“.

The announcement does not make clear how many systems this will buy. The contract also includes systems for the Navy and at least one system for the Philippines. Assuming the Philippines is buying only one system, it appears the contract will buy 16-17 systems, one for the Philippines, one for the National Guard/Reserve, three for the Coast Guard, and eleven or twelve for the Navy, but in the more likely case, the Philippines is actually buying two systems, then the numbers may actually be double this, which would make sense if the Coast Guard buy was for six Webber class. An FY2012 Contract for 21 Mk38 Mod2s for $24.2M would seem to indicate they cost about $1.1M each. I would like to think that, since the program has matured, this larger buy might actually cost less per unit, so that this is actually a buy of 30 or more systems (probably 32-34), with six going to the Coast Guard, two to the Philippines, two to the National Guard and Reserve, and the rest to the Navy.

DefenseMediaNetwork reports the Mk38 Mod3 offers a number of improvements over the Mod2 currently being fitted to the Webber class, including more ready ammunition on the mount (500 rounds vice 165), a coaxial .50 cal. gun (there was already a plan (pdf) to add a coaxial 7.62mm to the Mod2 version), higher elevation (75 degrees vice 40), better weather protection and serviceability, and the ability to simultaneously track up to three targets. There are also improvements to the search function of the ElectroOptic sensor that should make the system more useful in peacetime roles. They also report that BAE and Israeli manufacturer, Rafael, are considering adding the “Advanced Precision Kill Weapon System” APKWSII guided 70mm rocket system to the mount. In fact Israeli versions of this system already support surface to surface and surface to air missiles.

Most photos of the Mk38 Mod3, like the one above feature a 30mm gun which is an option, but it appears, from the language in the announcement, that these mounts will use the 25mm. I believe there is even a 40mm option. The Navy may be recycling existing 25mm guns, moving them to the new mount. Personally I would have preferred the larger caliber weapon, for its ability to take on larger surface targets. The 30mm would have almost as many rounds on the mount (420 vs 500), would be more accurate, have a greater effective range (3000 vs 2500 meters), and provide greater penetration.

ASuW Hellfire Test Success–Operational Late 2017

Navyrecognition reports that a successful test of modified Hellfire missiles for use in the Surface to Surface Missile Module (SSMM) planned for the Littoral Combat Ship has paved the way for operational deployment of the system in late 2017.

We have talked about these missiles before. They seem to be an ideal way to deal with the threat of small, fast, highly maneuverable boats that might be employed by terrorists, and absent more effective weapons, may provide some capability against even large vessels. Unlike gun systems, they promise high first round accuracy and lethality, with very little chance of a round going astray and hitting something unintended.

The projected SSMM would provide storage and launch facilities for up to 24 rounds. 24 rounds would weigh only about 2500 pounds. The launcher and support systems is unlikely to weigh more than that, suggesting and all up weight of about 5000 pounds, far less than either the 76mm Mk75 gun or the 57mm Mk110 (two and a half tons compared to eight or nine tons). Both of these guns are commonly used on missile and patrol boats smaller than the Webber class WPCs. Also unlike a gun system, the SSMM is unlikely to require any significant deck reinforcement.  It would almost certainly fit on all large cutters and perhaps the WPCs and WPBs as well. (It should be included on Offshore Patrol Cutters from day 1.) If the 24 round system is too large to be comfortably carried by smaller cutters, it is likely a smaller, say four round, system could be quickly and economically developed for Coast Guard use and perhaps for the Navy’s MkVI patrol boat as well.

If we take the Ports, Waterways, and Coastal Security mission seriously we really should be looking seriously at acquiring these systems, not just for the new ships as they are built, but also for the existing fleet with the idea that the systems would be transferred to the newer ships as the older ones are replaced.

The Navy should be willing to pay for these systems under existing inter-service agreements.

As noted before, if we need to stop a terrorist attack, we are far more likely to have a WPC or WPB on scene than a larger cutter. For this reason, arming some the Webber class in each homeport should be the first priority. Unfortunately the Webber Class are not geographically wide-spread, so we should look at mounting systems on existing MECs and WPBs to insure all potential targets have some protection until the entire fleet is armed.

I would say there are places where they might be mounted on Coast Guard stations ashore, to act as gate keepers for the ports against clandestine attacks, but coast defense is still an Army mission. Perhaps this is something we should be talking about too. If not Coast Guard manned defenses (which is probably the proper solution), then perhaps placement of unused SSMMs with their associated Navy crews on Coast Guard facilities or small detachments of army troops with their weapons to perform this function.

Small Unmanned Aerial Systems (sUAS)

sUAS

An AeroVironment Puma All-Environment small unmanned aircraft system is launched from Coast Guard Cutter Chock as part of the Research and Development Center’s Robotic Aircraft for Maritime Public Safety (RAMPS) project. U.S. Coast Guard photo by Petty Officer 2nd Class Luke Clayton.

The Acquisitions Directorate reports that the Coast Guard is at least looking at small UAS (UAVs for us traditionalists).

“The demonstrations are part of the RDC’s Robotic Aircraft for Maritime Public Safety project, which aims to determine the risks, benefits and limitations of operating commercial off-the-shelf sUAS technology in conjunction with Coast Guard cutters other than the national security cutter.”

Tests of seven systems were conducted on USCGC Chock (WYTL 65602), a 65 foot tug, so you know the systems had to be small. In fact, I have radio controlled airplanes bigger than these. Still, hopefully these are smarter.

An interesting aspect of the trials is that it included test specifically intended to determine if the sUAS would be useful in finding a person in the water. To do this they used a dummy with an enhanced IR signature comparable to that of a person they refer to as a “thermal Oscar.”

While UAVs of this size may have uses, ultimately, I think they will find that the system we need will be something with a radar that will fit on a Webber class, that means something similar to Scan Eagle. Smaller vessels don’t actually need their own UAS, they can be supported by UAS from ashore. Perhaps every SAR station should be able to launch their own UAS to get to scene before the boat arrives. That would require SAR stations to coordinate with Air Traffic Control. USCGC Chock’s sistership, 65 foot tug, USCGC Swivel, by Windwork50