Royal Australian Navy Discussions and Updates

Status
Not open for further replies.

Stock

Member
I think if the ADF is serious about developing an Amphibious capability, eventually LCAC of some kind will have to acquired. Perhaps not in the next 5 years, but certainly in the next 10.

While these are typically seen as a nice to have niche capability, when you consider the variety of things they could be useful for, perhaps they should be higher on the list.

They can support rapid deployment of amphibious forces and material from ships (large and small); they could allow freedom of movement in our tropical north during the wet season (something that is currently very difficult);can operate over mines; support international HADR;medical evacuation, transport supplies and people during local floods (consider how useful they would have been during Brisbane or Victorian floods);SAR; survey/research; surveillance ( especially the RSUs) they also have applications for ice operations (so potentially Tasmania and Antarctica), and in the river systems of tropical jungles of our northern neighbors (our primary operating environment).

To me they are more versatile than other capabilities we are looking at.

With their long list of uses and degree of "sexiness" surely it couldn't be to hard for a BDM to wow some politicians ;)

During TS15 the US marines used them very effectively- Link

Wonder if there were envious eyes from the ADF personnel? I am guessing that is a yes
Hovercraft are excellent for opening up the number of available landing sites and can operate independent of tides.

Unfortunately, the Canberra-class LHD's well dock cannot accommodate craft the size of the USMC LCAC. Whilst the dock itself is certainly wide and long enough, the centreline baffle is a permanent structure, so BAE informs.
 

Bluey 006

Member
Hovercraft are excellent for opening up the number of available landing sites and can operate independent of tides.

Unfortunately, the Canberra-class LHD's well dock cannot accommodate craft the size of the USMC LCAC. Whilst the dock itself is certainly wide and long enough, the centreline baffle is a permanent structure, so BAE informs.
Well that was a bit silly, wasn't it?
I wonder if the UK's LCAC (L) (Griffon 2000TDX) which is much smaller can fit either side?
 

John Newman

The Bunker Group
Ok John, my answers in blue

No offence, but the problem with the list you have prepared is that you are 'filling gaps' with ship production when I seriously can't understand what those ships are supposed to be being produced for (highlighted in bold above).

No offence taken but to be fair this plan fits with your wish list you posted some months ago. So hear me out and please keep an open mind. We are just speculating here.

If we look at ship production, currently based on 'commissioning' dates, there is going to be a six year gap in the last of the AWD's in 2020 and the first of the Future Frigates in 2026, I think we can all agree on that, ok?

Yes that is how it currently stands

Under my plan we are discussing, if we could get an OPV in construction by 2018, OPVs (1-8) are being commissioned during that time

Also the AORs will be commissioned around this time - If the BMT design is chosen, ASC will likely be involved in that too.


The very first ships in your list are 8 OPV's between 2018 and 2024, are these the ships that you are suggesting be the ACPB replacements? Or are you doubling up the suggestion by RAND of a class of 4 ships as gap fillers?

A bit of both. They are gap fillers allowing the major ship builders to stay open (BAE, Forgacs, ASC etc) and skill a new work force for the Major combatants, hire apprentices, recruit graduates etc but also the start of the ACPB replacement. The ACPB are pretty shagged and lacking in capability for what we really need. As an OPV with option for mission modules, in addition to the patrol duties they can also experiment with ROVs etc for mine hunting and hydrographic survey (refining doctrine etc), while we still have the existing Mine hunter and Hydrographic fleet in operation (which are slated for a life extension)

The ACPB were slated for a 15-year life – see link meaning they will need to replace in the early 2020s. These OPVs do some of that and add capability but a fleet of interim patrol boat based on an existing design would be need to be acquired or leased as a short-term replacement as per the 2013 White Paper direction (possibly the Cape class). These would likely have a similar life span to the Armidale’s around 15 years. This interim class would likely not be built by one of the Major builders, rather Austral or a similar 2nd tier ship builder ( which need to be replaced in the 2030s).

Either way, yes no doubt construction of a class of OPV's will have to be undertaken in that time frame as either a 'gap filler' and/or at least the start of construction for the ACPB replacements, so I do agree that 'something' is likely to be constructed at that time, either a stand alone class of OPV's (as suggested by RAND) or the ACPB replacements themselves.


Next of course is the Future Frigates, you list 9 Future Frigates between 2024 and 2038, yes that probably near enough to the correct time frame for construction/commissioning of that class.

Good, agreed

Before I go any further with your list, I think it's fair to say that from the end of the AWD's (2020) to the end of the Future Frigate production (around 2038/40), there will have to be a number of 'concurrent' ship production runs, NOT 'consecutive' production runs.

Yes, the replenishment ships (2 x AOR) and the landing ships also need to be fit in somewhere. Like I said these could be slotted in, there are 3 -4 yards after all.

And during that time, the ships that will have to be replaced prior to the end of the 2030's are: the ACBP's, the Future Frigates, the Mine Warfare ships and the Hydrographic fleet too (and possibly the LCH(R), if proceed with, during that time frame too), can we agree on that? And it may also be that some of the 'smaller' ships may in fact be built at locations 'other than' Techport too?

Yes, keep reading

The two LHD's are probably not going to be replaced until mid or late 2040's, the 2 AOR's probably closer to 2050 and that leaves Choules, which originally commissioned in the UK in 2006, say a 30 year life, so somewhere around the mid 2030's, another 'concurrent' program and possibly overseas build too (maybe tied to the time frame when the UK, Spanish and Dutch sisters/half sisters are being replaced).


So getting back to your list, the gap between 2038 and 2047 (first AWD replacement), you have listed a class of 12 Corvette/OCV's, correct?

These are an evolution on the OPVs (build 2018-2024) to replace the
interim patrol boats, mine warfare and hydrographic fleets. Bringing our total OPV and Corvette/OCV fleet to 20 – the original goal of SEA 1180.
DSTO is working on SEA 1179 Phase 1 which will extend the MHC (mine hunting/hydrographic) life of type, extension by 15 years, IOC is expected around 2021. Now agreed 2038 is a little late to replace the mine and hydrographic fleets, but under this plan we will have the 8xOPVs built 2018-2024) which can take majority of the minor warfare load, and the interim patrol boats


What exactly are these 12 ships replacing? What exactly is their purpose and role? Because I don't understand what the purpose of that class of 12 ships is other than to fill 'another gap' in production, (everything else in the fleet will have to be replaced 'before' those dates or 'after' those dates).

Not to say a future Government, may or may not, throw continuing production work at Australian shipyards, but surely you just don't go ahead and build a class of 12 OCV's over a 10 year period just as a gap filler??

Anyway, I'm interested to understand what exactly is the reason/purpose of those 12 OCV's.

So then after AWD replacements and future frigate replacements, you replace the 8 OPVs built in (2018-2024) with Corvettes/OCV to bring them in line with the 12 x Corvettes/OCVs built 2038- 2047. Giving you the 20 x OCV, 9 x Frigates and 3 AWD on a continuous build.

Plus, other work like the LHD replacements (which the hull is unlikely to build in Australia, only fitted out), Submarine maintenance or build (who knows) , Other auxiliaries like LPD ( again unlikely to be built in Australia) , Landing craft etc - but there are 3-4 yards for block work.

Under this program there will always be warships (including hull construction) built in Australia during our lifetime. Hence continuous build. - A the very least one warship is always under construction, which means we maintain a capability in Australia that can be built on as needed. Not completely degraded ( i.e valley of death)

Yes other ships will also be fitted out, maintained and blocks built also.

I am no expert and the experts in defence can no doubt improve on this, but this pretty basic project management schedule does deliver continuous build.

Of course plenty of elections during this time so – anything can happen.



Rock Kitten:

1. What if some of the OPV/corvettes are going to be aluminum hulled LCS from Austal? I haven't seen any modern mine sweeping/hunting vessels in steel hull, yes, we can use USV/UAVs yes, we can degauss the steel hull, but most common practice will go for fiber-glass or wooden hull.

in this plan, Austral would get the interim patrol boats and there is nothing to say they couldn't bid on the Corvette/OCV - Up to them to deliver a competitive bid. The initial 8 x OPVs no, as they are needed by the major yards to prevent closures (or so the media and their PR people would have us believe) and build a skilled workforce for the frigates.

Oh and rock kitten? Wooden hull ? Really ? a wood hull on a modern warship - errrrrr
Hi mate, yes I can see why you've done the list the way you have, but I still don't agree (again, no offence, ok?).

Firstly in regard to the ACPB's, yes life of around 15 years, and will need to be replaced (or start to be replaced) around the 2020 mark and their replacement is the 'obvious' gap filler that industry needs to fit in the 6 or so years gap between the end of the AWD's and Future Frigates, I think we can both firmly agree on that, but.....

You refer to the 2013 DWP and the fact that the 2013 DWP planned to 'defer' SEA1180 and replace the ACPB's with another class of PB's (all true), but how do you know that the 'current' Government with it's soon to be released DWP won't 'scrap' that plan, just as the 2013 DWP scrapped the 2009 DWP SEA1180 plan??

Don't forget that a couple of months ago the 'current' Def Min stated that the ACPB's would be replaced by a class of OPV's, I have never heard him say 'and by the way, we will also be building another class of short lived PB's as stated in the 2013 Gillard DWP'.

So I can see why you are suggesting another class of 12 OCV's for that 2038-2047 period, but that would 'only' happen if they were to be built as a replacement for some 'interim' replacement for the ACPB's, and that is where I see the 'big hole' in your suggestion.

Again, don't forget that the Gillard Governments 2013 DWP, scrapped the plan of the Rudd 2009 DWP in what was intended to replace the ACPB's, well I can easily imagine that the Abbott 2015 DWP will also be able to easily scrap the 2013 DWP plan for the ACPB's too!

If the OPV's (that the current Def Min mentioned) are replacing the ACPB's, then I can easily imagine that those larger and more capable ships could have a life of at least 25 years or so and that would mean they wouldn't need replacing till around the mid 2040's and beyond.

I don't disagree one bit that the Government or future Governments (if they stick to a plan too), would be able to manipulate whatever it wanted to produce a 'continuous' build program, but that would mean 'deferring' replacement of some classes of ships and on the other hand 'shortening' the life of other classes and trying to lay them out one after the other in a consecutive manner.

But to me it doesn't work like that (or shouldn't work like that), various classes of ships will 'overlap' when it comes to their due date to be replaced, and at some time into the future there is the likelihood that 'multiple' shipbuilding programs will be running side by side.

The Future Frigates will be under construction at the same time as the Collins replacements, the OPV's replacing the ACPB's will also likely overlap in the early years of the above two programs, the eventual replacement of the Mine Warfare and Hydrographic ships should all need to be replaced during the early 2030's at the latest, LCH(R) and so on.

Either way you slice it, I still think that by around the very late 2030's to the mid to late 2040's there will be a 'gap' in requirement for new Naval ships and a new Valley of Death will be being discussed by a future generation!!!

Anyway, I'm sure we can speculate endlessly, hopefully we get to see the Governments Naval Shipbuilding plan, DWP and DCP soon and then we can 'really' start to dissect it and see if it stands up to scrutiny!!!!

Cheers,
 

Stampede

Well-Known Member
I found a profile drawing of an LCM8. The running gear is fully exposed, ie the shaft runs through an "A" bracket and the propeller and rudder have no protection.

This sort of set up is found in many twin engined pleasure craft and groundings can be catastrophic. If they are involved in a grounding and pressure is put on the shaft and rudder, two things can happen. The rudder can be damaged by forcing it up through the rudder gland and causing a flood. The propeller shaft can also get bent, if the vessel is then operated serious damage can occur to the stern gland and in the worst case scenario the engine can be ripped of the engine mounts.

Another consideration is that if the engine is raw water cooled it can cause a blockage and a catastrophic failure of the engine can occur. That is why many vessels that operate in shallow water are keel cooled. The running gear is also protected by a skeg going under the propeller and supporting the bottom of the rudder.

The best solution here is that the LCM-8's are modified so that their running gear is fully protected or they are retired and newer and more technically appropriate replacements acquired.

Hope this helps.

Thanks to both of you for the response.

Regards S
 

Bluey 006

Member
You refer to the 2013 DWP and the fact that the 2013 DWP planned to 'defer' SEA1180 and replace the ACPB's with another class of PB's (all true), but how do you know that the 'current' Government with it's soon to be released DWP won't 'scrap' that plan, just as the 2013 DWP scrapped the 2009 DWP SEA1180 plan??
Yes DWP could change everything, only thing is DSTO still has the Patrol Boat -Replacement listed as a high priority project that is :

"seeking to replace the current Armidale Class Patrol Boats (ACPB) with a proven design, but locally constructured, vessel that will retain the patrol capability of the existing fleet but also overcome key capability short falls" link

Language in that doesn't sound like an OPV to me
 

John Newman

The Bunker Group
Yes DWP could change everything, only thing is DSTO still has the Patrol Boat -Replacement listed as a high priority project that is :

"seeking to replace the current Armidale Class Patrol Boats (ACPB) with a proven design, but locally constructured, vessel that will retain the patrol capability of the existing fleet but also overcome key capability short falls" link

Language in that doesn't sound like an OPV to me
Just because the DSTO website still has the 'direction' planned by the last DWP (2013) up on the site, doesn't necessarily mean that it is still so, when was the last time that that page was updated? The 'wording' used on that page reads to me like the same language that was used at the time of the 2013 DWP.

If I go to the Defence website and look for the Defence Capability Plan (DCP), well guess what I find? The last one to be published and that was back in 2012!

When the Gillard Government produced their 2013 DWP they in fact didn't bother to produce a new DCP reflecting the changes to the previous DCP, so does that mean that the 2012 DCP is in fact 'current'?

Personally I'd take much more notice of what the 'current' Def Min said recently, and that was that a class of OPV's will replace the ACPB's, who do you think will be in charge and make decisions on the ACPB replacement? The DSTO or the 'current' Def Min?

My money will be on the current Def Min!

Cheers,
 

Alf662

New Member
A few years old but an interesting read none the less that I find sum's up roughly what we should be aiming for and how to use it..

http://www.army.gov.au/Our-future/Publications/Australian-Army-Journal/Past-editions/~/media/Files/Our%20future/LWSC%20Publications/AAJ/2004Winter/11-TheAustralianDefenceFor.pdf
Very interesting Vonnoobie. It occurred to me after reading this and the ASPI article that may be the Corvette sized vessel is being dictated by an army requirement to maximise its maneuvering capability and to be able to undertake raids.

A lot has been said about the lack of asset availability for the army to be able to undertake amphibious training and they would need to have more of an amphibious philosophy and mindset. If that was or is the case what would they need?

An army raiding craft would probably have to be around 15 metres, that in turn would dictate the size of the mother vessel which would probably need to be around 2,500 to 3,000 tonnes minimum, ie around the size of a mid to large corvette. This type of craft would also be quite valuable in a HADR environment and would appear a lot more palatable to government bean counters.

I know it is a bit pre-emptive with the DWP about to come out, but thought I would put it out their any way.
 

aussienscale

The Bunker Group
Verified Defense Pro
It probably would (assuming skirts are under 7m or thereabouts when inflated), but would only be able to move troops.
It can actually take an LCAC, just for your info :)

There is a long history of this conversation and many other subjects throughout the thread and also in the JC1 thread

Cheers
 

vonnoobie

Well-Known Member
Future Frigates (9)
Construction commenced – 2024 (drum beat 1.5/18 months)
Construction concluded - 2038
First ANZAC frigate retires in : 2026
First Future Frigate completed -2026
Last ANZAC retires 2036
Last Future Frigate completed - 2038 (which is ok as we now have 9)
The basic make up of your proposal I agree with both in types and number's however in regard's to the future frigates, Is there any particular reason they are being built in 18 months compared to 24 months of the AWD's? It is my understanding they will be of similar size with the frigate quite possibly being larger then the AWD's.
 

Bluey 006

Member
The basic make up of your proposal I agree with both in types and number's however in regard's to the future frigates, Is there any particular reason they are being built in 18 months compared to 24 months of the AWD's? It is my understanding they will be of similar size with the frigate quite possibly being larger then the AWD's.
Good question. A few reasons - this is based on the assumption that they would be a little smaller 5500-6500 tonnes. Also to closely mach up the the retirement schedule of existing frigates, and allow for trails etc. One of the other factors is that the AWD replacements in that proposal would be our first of a next generation (lasers, hypersonic missiles/ rail guns etc) of warships, which would likely be much more complex than existing Hobart class AWD and the SEA 5000 future frigates. Having said that, by then things like 3D printing might change the game significantly.

I was just playing with time frames really to see how a continuous build could work with existing plans, and/or how the upcoming ship building plan might look. It clearly can work, without altering our path too much.

Of course DWP, major delays, changes in government or strategic circumstances, and technology advancements will all alter the possibilities
 
Last edited:

Stock

Member
It can actually take an LCAC, just for your info :)

There is a long history of this conversation and many other subjects throughout the thread and also in the JC1 thread

Cheers
Theoretically yes, the LHD's well dock opening will allow the LCAC to enter, but the centreline baffle prevents it from moving far enough inside the ship to marry up to the steel beach in order to load/discharge.

See the RAN story at this link and note the clearances either side of the LCM-1Es.

Canberra conducts first open ocean docking | Navy Daily
 

vonnoobie

Well-Known Member
In regards to the future frigates and the Anzac's, Do we have an idea of what condition the Anzac's are in? Have read in the past time to time that vessel's have suffered from very poor maintenance or that some have been maintained so well that they have been able to enjoy longer life spans (This is not specific to the RAN), So I'm wondering if there conditions are so good we could squeeze a few more years out of the last few to allow a one for one replacement or are they so bad that we may have to think about an earlier replacement schedule?
 

vonnoobie

Well-Known Member
Theoretically yes, the LHD's well dock opening will allow the LCAC to enter, but the centreline baffle prevents it from moving far enough inside the ship to marry up to the steel beach in order to load/discharge.

See the RAN story at this link and note the clearances either side of the LCM-1Es.

Canberra conducts first open ocean docking | Navy Daily
I don't expect any one to have detailed knowledge but theoretically couldn't the centerline baffle be done away with and shift it to both sides?
 

Bluey 006

Member
I don't expect any one to have detailed knowledge but theoretically couldn't the centerline baffle be done away with and shift it to both sides?
No idea. But both the Navy site and the HMAS Canberra site state the LHDs can carry LCACs.

"The well dock is 69.3m long and 16.8m wide (1165m2) and the LHD will normally carry four LCM 1E. An additional four RHIBs can be carried behind the LCM 1Es, however this will be mission dependant rather than a normal load out. The well dock has been designed to handle water craft of allied nations, including LCUs, amphibious vehicles and LCACs"
 

Mercator

New Member
I don't expect any one to have detailed knowledge but theoretically couldn't the centerline baffle be done away with and shift it to both sides?
As I understand it, the baffle only separates the first set of landing spots. The aft pair
are unobstructed and capable of receiving one LCAC.
 

Stock

Member
I don't expect any one to have detailed knowledge but theoretically couldn't the centerline baffle be done away with and shift it to both sides?
Not according to BAE Systems. It's a fixed structure. Info is first hand.

Removing the centreline baffle would make life very difficult for the LCM-1Es.
 

Stock

Member
No idea. But both the Navy site and the HMAS Canberra site state the LHDs can carry LCACs.

"The well dock is 69.3m long and 16.8m wide (1165m2) and the LHD will normally carry four LCM 1E. An additional four RHIBs can be carried behind the LCM 1Es, however this will be mission dependant rather than a normal load out. The well dock has been designed to handle water craft of allied nations, including LCUs, amphibious vehicles and LCACs"
Looking at the cutaway graphic you will see the well dock is clear for about half its length then divided by the baffle. LCAC will certainly get in there but at 14m wide they aint going any further in toward the steel beach.
 

vonnoobie

Well-Known Member
Not according to BAE Systems. It's a fixed structure. Info is first hand.

Removing the centreline baffle would make life very difficult for the LCM-1Es.
I figured it was a fixed structure, My query is not to get rid of it completely but rather to shift it.

With out having detailed or first hand knowledge on the design I imagine locating the center line baffle to both sides would not be an impossible task, It would allow the role it fills to be kept with a slight reduction in the well deck width.

This all aside looking at Amphibious Assault Ship (LHD) | Royal Australian Navy if the image is correct the center line baffle on appears to extend half way down the well deck, Accounting for the length of the deck and the length of the LCAC then there is likely enough room to fit in a single LCAC.
 

Volkodav

The Bunker Group
Verified Defense Pro
I figured it was a fixed structure, My query is not to get rid of it completely but rather to shift it.

With out having detailed or first hand knowledge on the design I imagine locating the center line baffle to both sides would not be an impossible task, It would allow the role it fills to be kept with a slight reduction in the well deck width.

This all aside looking at Amphibious Assault Ship (LHD) | Royal Australian Navy if the image is correct the center line baffle on appears to extend half way down the well deck, Accounting for the length of the deck and the length of the LCAC then there is likely enough room to fit in a single LCAC.
Removing the baffle is the sort of thing that you would do in a major availability to allow newly acquired vehicles to fit, say the Ultra Heavy-Lift Amphibious Connector (UHAC) the USMC is developing.
 
Status
Not open for further replies.
Top