An American P-8 Posiedon successfully conducted a coordinated missile launch using two AGM-84D Harpoons against a target barge in Norway.

According to a U.S. Navy news release, the ‘Fighting Marlins’ of Patrol Squadron FOUR ZERO (VP-40) successfully conducted a coordinated missile launch with VP-4 using two Air to Surface Missile (AGM-84D) Harpoons against a target barge near Andøya Space Defense, Norway during exercise At-Sea Demo/Formidable Shield (ASD/FS), May 31, 2021.

“VP-40 and VP-4 worked as one unit to plan the coordination of flights, mission timeline, and launches. Plans for exercise safety and communications were developed in close cooperation with allies to enable the firing event.

The successful result reaffirmed the global reach of the P-8A and its capability to conduct Surface Warfare engagements when directed to provide offensive or defensive support to a maritime task group.”

“Sea control is maintained by the ability to employ kinetic effects,” said Cmdr. Matthew Letcher, VP-40 commanding officer.

“Our performance with partner units and allies in exercises like At-Sea Demonstration/Formidable Shield delivers confidence in an uncertain world and sends a message to friends and potential adversaries alike.  

On this inaugural P-8A deployment for VP-40, the Fighting Marlins have already made significant contributions to the international maritime security picture while conducting sustained operations across Sixth Fleet.”

You can read more here.

Tom Dunlop
Tom has spent the last 13 years working in the defence industry, specifically military and commercial shipbuilding. His work has taken him around Europe and the Far East, he is currently based in Scotland.

43 COMMENTS

    • I believe we are buying ‘the package’ ; US spec P-8s wired for missiles and the missiles. Am looking for a source.

    • Mk.46 are out of service.

      UK will have access to Harpoon and Mk.54 torps from US stocks.

      Hopefully, this ridiculous position will be sorted in due course and the far superior, recently upgraded Stingray, will be integrated.

      I’d love to see JSM integrated to P-8. Norway and Australia are both users of P-8 and have ordered JSM, the Aussies were looking at integrating JSM to P-8 a few years ago, but this appears to have gone quiet recently. If it was….a small buy of 50 missiles would make an awful lot of sense for the UK’s P-8 and F-35B fleets…

    • I am sure Harpoon not hard to destroy with any number of CIWS including Phalanx, never mind why China and Russia has. Even Taiwan is getting these, that tells you how useless it is.

      It would be folly to even launch one of these.

      • Can we have some real world data on the current lethality of this rather than “I’m Sure”

        where are you souring this opinion?

        🏴󠁧󠁢󠁳󠁣󠁴󠁿🇬🇧

        • He does not have to source this opinion just look at what Russia, China, Iran, India are fielding as AShMs most are supersonic, have heavier warheads than harpoon more advanced electronics/guidance much greater range, etc.

          • You seen any of those scary missiles in action? Any real data to back up a wiki entry? Harpoon is dated but built in their thousands and plenty of launch platforms makes it a problem for any enemy.

          • The same could be said for Harpoon, it has had no combat record against near-peer adversaries, but all the same its specs are obsolete compared to the latest developments in AShM.

          • Nah man that doesn’t conclusively answer anything. How does pointing out how good other anti surface missiles are ? Quantify whether the Harpoon is easy to counter?.

            im not arguing that there aren’t better more modern missiles out there or that it isn’t coming to end of its life all I’m saying is it seems a bit daft to just claim based on from what I can see nothing that it’s lemon squeezey to shoot down.

            Honestly without any data on the matter I’m just not buying that claim. 2018 at RIMPAC the block II + performed well .

            🏴󠁧󠁢󠁳󠁣󠁴󠁿🇬🇧

        • Unfortunately, the PLA does not publish that information to “prove it”, you have to deduce it by years of experience watching the PLA and making educated guesses.

          In this case the argument is that the PLA are putting 11 barrel CIWS on everything, they only do this when they are extremely confident about somethings performance, otherwise they refine and iterate.

          They are up against the NSM missile, so one could deduce (along with much more supporting theory and evidence) that Harpoon is not an issue.

          This is an extremely simplified explanation for you.

          • So just your opinion then? Bit of guess work

            okie dokey

            🏴󠁧󠁢󠁳󠁣󠁴󠁿🇬🇧

          • it’s not just my opinion, but the collective opinion of a community of PLA watchers.

            Come take a look at sinodefenseforum.

          • Aye I will do 👍🏻that’s what I’m looking for information to back up what your saying. I wasn’t trying to argue just want see some hard fact on the matter.

            🏴󠁧󠁢󠁳󠁣󠁴󠁿🇬🇧

          • Good luck getting anything more than that. 99% of what gets posted on these boards is guess work even though the posters would have you think they have seen the classified data. Yes it is possible to make some educated guesses but often times posters don’t even bother to look up widely available info and yet still claim that this weapon is superior to some other weapon on nothing more than wishful thinking.

            For what its worth, the lrasm is also subsonic and the USN is ordering them by the hundreds so being subsonic does not make a weapon of this type obsolete.

          • Aye Roger that, yes I have looked for this type of info on all the modern and legacy era missiles but nothing really tells you how good any of them really would be in a combat situation or whether this one or that one could defeat Chinese or Russian AA systems or vice versa .

            As much as the MOD or DOD for that matter get slated theses people are not stupid and any defence platform they use is used for a reason and isn’t shite regardless of what Joe Blow has to say on here

            🏴󠁧󠁢󠁳󠁣󠁴󠁿🇬🇧

          • If your vessel ever gets to the point of relying on a CIWS system to stop a harpoon or any other anti ship missile, you are having a very very bad day.

  1. The USN and RAAF have both fired Harpoon from Poseidon at previous RIMPAC exercises:

    https://m.youtube.com/watch?v=6KHrWV8rV-Q

    It shouldn’t be too long before LRASM is integrated and operational on USN and RAAF Poseidon.

    I’d imagine when Norway receives its Poseidon in a few years that JSM will be integrated on their aircraft.

    • Might not be….the Australian’s were looking to fund the integration work (as they have ordered JSM as well and build some of the seeker) but it has gone quiet in recent years. The Australian’s are also ordering LRASM and are JASSM users, both of wich will get integrated to P-8 by 2026.

      • It might be sensible for the UK to also get some LSRAM for its P8s and put in the mix with its Harpoons for a shorter to medium and a long range capability.

      • I’m Australian and as at today JSM has not been ordered (it has been ordered by Norway and Japan for their F-35A fleets).

        That’s not to say it won’t be ordered, especially with the development involvement to date, but no Government announcements as yet.

        It’s likely that in the future the RAAF and RAN will use ‘multiple’ types of AShM such as JSM, NSM, LRASM, even SM-6 has an anti-ship capability.

        As for JASSM, there is no news as to what will happen with that capability when the last Squadron of Classic Hornets retire at the end of the year.

        Cheers,

    • Harpoon from P-8 might be useful in an uncontested environment, but for anti-shipping in a hot war we need to be giving F-35 and the Vixen UAS some effective stand-off penetrators. Spear cap 3 is very good for small vessels or to target C3 and effectively take larger ones out of the fight, but supersonic Perseus is needed to sink ’em. JSM / LRASM could be an interim measure.

  2. How effective would a 737/P-8 be as a bomber? Obviously it won’t be as good as a B-52, but makes me wonder as the P-8s are fitted with a weapons bay…

      • There was once a plan to use Nimrods in a strategic bombing role if/when the circumstances arose. As we all know, the Nimrod fleet was withdrawn shortly after the plan was formulated.

  3. I understand the P-8s we are buying come wired for this Harpoon 1C and that we will get missiles too. Would Block II be a shoe in?

  4. This is interesting, a memo from the acting secretary of the US Navy:
    Memo reveals US Navy must pick between future destroyer, fighter or sub for FY23 plan (defensenews.com)

    Memo says some programs are essential and must continue: The Columbia ballistic missile sub replacement program, investment in improving targeting and cross platform intelligence sharing within the Navy (Project Overmatch) and investment in improved teleworking facilities for training and education in the experience of Covid-19. Hes also saying there will need to be a cost saving program demolishing naval infrastructure to save money on maintenance.

    However the gist of the memo is that there is only enough money left in the naval procurement budget to develop and acquire one of the three major platform replacement programs planned during the 2020’s and the others will have to wait until the 2030’s before commencing full scale procurement activities.

    The US navy will have to choose whether it wants the NG-XX sixth gen fighter to replace the F-18. The replacement of the Arleigh Burke class destroyers with a new hull that has growth potential (existing flight III hull is at max displacement. power generation and cooling capacity and new capabilities and weapons (such as lasers, weapons or more electronic tech) cannot be added after the new mk6 radar is fitted in the Mk10 ship specification). Or the SSN(X) attack submarine replacement of the Virginia and Seawolf classes.

    • Do you think that there could be any crossover and shared development with a T26+, T83 between the UK and US. Even the successor to the Astutes? If it’s in a similar time frame. If would be good to sell or license a T26+ type vessel to the US considering they’ve been open to foreign designs lately.

  5. Ok ASM Missile engagements.

    When you launch against an FF/D/C you don’t launch one. You launch between 2 and 4. You plan the attack profiles to do doglegs and to come from various points of the compass and arrive on target at the same time making countering the incoming missiles more difficult and upping the hit probability to almost 100%. The problem with doglegs is it decreases the “as the crow flies” engagement range. Whilst the total flight length may be 100km, with doglegs, the direct shooter to target distance will come down to way less than that, say 50km.

    For flight profiles most subsonic are low and slow. Supersonic can be low and fast but with relatively short range engagements . The other profile is high and fast with a terminal high dive to the target or a gradual step down to low level. Each profile has its pluses and minuses. Low is a far lower detection time and hence lower reaction time due to the radar horizon. High lets you know the thing is coming but it may be outside of the engagement capabilities of any missiles you have until the terminal phase.

    You can vary the terminal phases to do High Dive, Sea Skimmer or pop up if that capability is included. Also included will be a switch to home on jam if jamming occurs. Stop jamming and it will go back to active homing. Using offboard jammers make the incoming home on jam but to a jammer that isn’t on the ship, pulling the missle away from its target.

    For a Harpoon shot you will need OHT targeting data or you will be shooting blind On a T23 this can be done by Wildcat or Merlin using radar or PID. Once you have target data you need to allow for target speed, course and the angle of look for the missile homing head (radar or IR) . When the missile arrives at the target area, If the target is not in the homing head look angle the missile cannot see a target and will not home in . Worst case, it homes on the first thing it sees which may not be the target you want. Something like a floating decoy, civilian ship, oil rig. This is where datalinks come into their own.

    Subsonic course corrections in the terminal phase to get a hit are straight forward . Small movements in control surfaces mean small accurate movements in the flight profile with little imparted G force. For supersonic missiles , the faster they get the more difficult to control. Any small movement in control surfaces will result in a relatively large movement in the course of the missile and a high G loading.

    So whilst UK Harpoon is pretty dumb in being fire and forget and it does not have a data link it is not obsolete. Components in the missile may be approaching LIFEX but these can be given extensions past their “sell buy date” to extend the Service life of the missile.

    With T23 Ceptor now getting a surface capability the RN can mix up engagements with targets. A couple of low slow Harpoon dog legged out to attack a target from the far side at long range whilst shooting a couple of small Mach 3 missiles to dive in from above. If you get it right the time on target will be the same causing major issues for any defence systems.

    There are a lot more complex issues involved with any engagement but that is the simple overview.

  6. Sorry to be so blunt but I grow weary of the Mk.54 bashing that inevitably pops up on P-8 related topics. Let me be clear, I believe StringRay is probably (if not certainly) better in every regard but let me ask any Mk.54 bashers out there a few simple Qs. 1) Can it do 40+kts? 2) Can it dive to 1000+ft? 3) Can it run at pace for 10+km? 4) Does it have a decent warhead? 5) Does it have an effective seeker? . . The answer to all 5 is Yes! Now . . Can StingRay be dropped by a P-8 now (or any time soon), No! Can StringRay be shot out of a Mk41 VLS to a contact many km away, No! What does this mean, it means the Mk54 will do just fine for now 🙂

    • From what I know/remember on the MK46 (it’s been awhile since the RN got rid of it…I last worked on them in 1988 when we then got Sting Ray onboard) and the unclass bits on Sting Ray I can discuss.
      So this should cover the latest MK54 Mod 1 variant
      Q1. It may get to 45 knts on a good day in shallow water but thats its limit. Sting Ray is substantially faster. SR has a better probability of being able to catch a target from its water impact point because the target is not going to be pulling away or maintaining a small decrease in sub to torpedo range because the sub is doing only a few knts less than the torpedo.
      Q2 Yes it can dive to 1000ft and it will take around 15 seconds to get there.
      Q3 It would probably go dead in the water after running for a total distance run of 9K yds. That’s not as the crow flies. If its on a spiral search or a snake search the crow flies distance will be a lot less from the splash point or launch point.
      Q4 No it has a blast warhead that was assessed decades ago by the MoD to be ineffective against double hulled subs. Against something like an OSCAR it would hole the flank missile tubes but not damage the subs pressure hull. Sting Ray has a Shaped charge directional (Munro effect) warhead that can punch through double hulls and still hole the pressure hull. Shaped Charge directional warheads need to be at an optimum angle to the targets hull for the best penetration. SR ensures this happens.
      Q5 Seeker This is the MK 50 bit which I am somewhat in the dark about but it’s been well reported that it is performing below the spec . It hit the target on its initial trials but the target was set up to provide the best chance of a hit, not in a realistic environment. The USN Report on the system wasn’t really that praise worthy.

      https://www.dote.osd.mil/Portals/97/pub/reports/FY2020/navy/2020mk54.pdf?ver=54sbrSeqq368dihBRJuFYw%3d%3d

      Regarding the next iteration of Mk 54, the Mod 2. From the above report this will have a new propulsion system (whoot!) …But its not qualified for use on Longshot in a P8 or in ASROC. So that’s a whole new lot of qualification testing, risk assessments , employment testing before it can be used if it ever is. At this point the RAF should be qualifying SR instead of MK54.

      As I said, the RAF ( Not the RN thank goodness) has regressed 35 years to a torpedo that will struggle against a modern deep diving and fast sub as well as a Diesel Sub in shallow water. Ok the RAF is making the most of a bad situation but it really does need to get SR integrated as quickly as possible on a P8.

      Put it this way would the ARMY buy in Chieftains to replace Challenger 2?
      Ok thats a bad example… with their current procurement performance …probably yes they would.

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