Mogami Class Frigates for Australia

Aussiegunner

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Good news here in Australia, the Defence Minister has just announced the acquisition of 11 very capable Japanese Mogami-Class Frigates. It started off as a corvette/light frigate purchase for general patrol duties, to cover for the Hobart and Hunter Class frigates on warfighting duties, but evolved into a requirement for a much more capable design.

The first three are being built in Japan and apparently they are so much more efficient at shipbuilding than the European competitors, that they can deliver these ships at a lower price than the Meko A200, which is a modern evolution of the ANZACs. Hopefully they will be able to teach the Australian shipyard in Western Australia, Austel, a thing or two about efficient production for the final eight ships.

Our Navy is in very poor shape right now, we only have ten (soon nine) major surface units, two operational submarines and we have retired two thirds of our mine warfare vessels. It should never have come to this, but I think that unless the threat from the north develops far quicker than we expect and for some reason our allies cannot help us out, we should be ok in the 2030s.

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Mogami-class frigate selected for the Navy's new general-purpose frigates

5 August 2025

The Albanese Government is accelerating the delivery of a larger and more lethal surface combatant fleet with the selection of the upgraded Japanese Mogami-class frigate as the preferred platform for the Royal Australian Navy’s future fleet of general purpose frigates.

Following a rigorous and competitive tender process, Mitsubishi Heavy Industries’ Mogami-class frigate was assessed as best able to quickly meet the capability requirements and strategic needs of the Australian Defence Force (ADF).

The upgraded Mogami-class frigate boasts a range of up to 10,000 nautical miles, a 32 Cell Vertical Launch System, and is fitted with surface-to-air missiles and anti-ship missiles.

The decision comes months ahead of schedule – reflecting the Albanese Government’s commitment to transforming the ADF into a more integrated, focussed force.

The Government acknowledges the competitive, high-quality proposal submitted by Thyssenkrupp Marine Systems, and thank them for their commitment and professionalism throughout this procurement process.

Defence will now proceed with the next stage of the procurement process with Mitsubishi Heavy Industries, with the aim to enter early into binding, commercial contracts with Mitsubishi Heavy Industries and the government of Japan in 2026.

The Government’s response to the Independent Analysis of Navy’s Surface Combatant Fleet outlined that the first three general purpose frigates would be built offshore. This accelerated program will see the first three frigates built in Japan – with the first scheduled to be delivered to Australia in 2029 and operational in 2030.

That means, under the Albanese Government, the Navy will receive its first new surface combatant five years earlier than planned by the former Coalition government.

Successful consolidation of the Henderson precinct in Western Australia will enable the remainder of the build to be constructed locally, in line with the Albanese Government’s commitment to continuous naval shipbuilding.

Over the next two decades, tens of billions of dollars will be invested in defence capabilities in the West, supporting in the order of 10,000 well-paid, high-skilled jobs. This forms part of the Albanese Government’s $55 billion investment over the decade for Navy’s surface combatant fleet.

Australia’s new general purpose frigates will replace the Anzac-class frigates and will be equipped for undersea warfare and air defence.

Alongside the Hunter-class frigates and the upgraded Hobart-class destroyers and advanced missile investments, the general purpose frigates will be an essential part of the Albanese Government’s plan to more than double the size of Navy’s surface combatant fleet.

Quotes attributable to Deputy Prime Minister, Richard Marles:

“This announcement is another example of the Albanese Government’s focus on investing in the capabilities we need now and into the future, to meet Australia’s strategic circumstances.

“The upgraded Mogami-class frigate will help secure our maritime trade routes and our northern approaches as part of a larger and more lethal naval surface combatant fleet.

“The Albanese Government is delivering these commitments at pace, as part of our sustained commitment to continuous naval shipbuilding in the West – driving jobs, investment and infrastructure for decades to come.

“We thank both Mitsubishi Heavy Industries and Thyssenkrupp Marine Systems, as well as the governments of Japan and Germany for their focus and cooperation throughout this procurement process.”

Quotes attributable to Minister for Defence Industry, Pat Conroy:

“Today, we are taking another step towards delivering a much larger and more lethal Navy, with stealth frigates that will reassure our allies and deter our adversaries.

“The upgraded Mogami‑class frigate is the best option for our Navy, boosting its capability to put to sea.

“It will take our general purpose frigates from being able to fire 32 air defence missiles to 128 missiles, giving our sailors the cutting‑edge weapons and combat systems they need to prevail in an increasingly complex environment.

“This decision comes months ahead of schedule, reinforcing our commitment to deliver of capability at speed and at a lower overall cost to taxpayers. It makes good on our commitment to deliver four times as many warships in the next 10 years compared to the plan inherited by the former Coalition government.”


 
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Well I foresee no problems getting the first three being delivered on time and on budget given they're being built in Japan. unfortunately and based on past efforts? I suspect 'problems' will emerge once we start cutting steel here. They always have in the past.
 
Well I foresee no problems getting the first three being delivered on time and on budget given they're being built in Japan. unfortunately and based on past efforts? I suspect 'problems' will emerge once we start cutting steel here. They always have in the past.
I think the ANZACs were the last ships we built that didn't get cocked up.

I suspect that the Mogami's have been selected to provide competitive tension with the Hunter's and vice versa. We have six Hunters on order with an option for more, hopefully they will make the final four or so Mogami's "at risk", if Austal does not deliver. Knowing that they could lose half their work and Thales having the carrot of being able to gain it, would be a great incentive for both.
 
In defence of spec creep, that's the ONLY way to keep a new weapons system current. It's a race between affordability and spec crepe. There are enough examples of a weapons system that could not keep up with spec crepe and had to be cancelled. The American Future Combat System and the Northrap F-20 TIGERSHARK are the examples. The desire to keep things cheap made these systems obsolesce before the production line.

Even still, the M1 tank and the F-22 RAPTOR were not examples of the latest and greatest. They were the best that can be afforded despite spec creep.
 
In defence of spec creep, that's the ONLY way to keep a new weapons system current. It's a race between affordability and spec crepe. There are enough examples of a weapons system that could not keep up with spec crepe and had to be cancelled. The American Future Combat System and the Northrap F-20 TIGERSHARK are the examples. The desire to keep things cheap made these systems obsolesce before the production line.

Even still, the M1 tank and the F-22 RAPTOR were not examples of the latest and greatest. They were the best that can be afforded despite spec creep.
In Australia's case it has been more about the military and politicians trying to meet more objectives out of a platform than is prudent. Australian content and design changes, requirements to build in Australia, they all add cost and risk over the most direct path to a suitable warfighting capability.

It has led to a few Frankenstein Monsters over the years. The Seasprite Helicopters that never entered service after $1billion was sunk into them, because the programming of the bespoke combat system was messed up, is the standout example.

Hopefully the Upgraded Mogamis being an evolution of a proven but capable ship, withbthe first three built in Japan and the government being strick about no major design or equipment changes, will amelorate those risks for this project.
 
In Australia's case it has been more about the military and politicians trying to meet more objectives out of a platform than is prudent. Australian content and design changes, requirements to build in Australia, they all add cost and risk over the most direct path to a suitable warfighting capability.

It has led to a few Frankenstein Monsters over the years. The Seasprite Helicopters that never entered service after $1billion was sunk into them, because the programming of the bespoke combat system was messed up, is the standout example.

Hopefully the Upgraded Mogamis being an evolution of a proven but capable ship, withbthe first three built in Japan and the government being strick about no major design or equipment changes, will amelorate those risks for this project.
 
In Australia's case it has been more about the military and politicians trying to meet more objectives out of a platform than is prudent. Australian content and design changes, requirements to build in Australia, they all add cost and risk over the most direct path to a suitable warfighting capability.

It has led to a few Frankenstein Monsters over the years. The Seasprite Helicopters that never entered service after $1billion was sunk into them, because the programming of the bespoke combat system was messed up, is the standout example.

Hopefully the Upgraded Mogamis being an evolution of a proven but capable ship, withbthe first three built in Japan and the government being strick about no major design or equipment changes, will amelorate those risks for this project.
We do do good radar and related ECM systems like Nulka and hardened electronics. Pity we weren't astute enough to get into consumer and industrial electronics in a big way!
 
We do do good radar and related ECM systems like Nulka and hardened electronics. Pity we weren't astute enough to get into consumer and industrial electronics in a big way!

The Nulka would just bolt onto the deck, Jennifer Parker who is a very prominent maritime strategy academic, suggested that would be likely to be included.


The CEAFAR radar is good but integrating thag is what has made the Humters top heavy and had caused time and cost blowouts. The Government was resolute that it would not be included on the Mogami, even though they own half the company. CEA has plenty of work with the Hunters and land based systems anyway.
 
The Nulka would just bolt onto the deck, Jennifer Parker who is a very prominent maritime strategy academic, suggested that would be likely to be included.


The CEAFAR radar is good but integrating thag is what has made the Humters top heavy and had caused time and cost blowouts. The Government was resolute that it would not be included on the Mogami, even though they own half the company. CEA has plenty of work with the Hunters and land based systems anyway.
Pity. You'd think the weight issue could have been addressed early on in discussions with Japanese the government and the ship builders when or shortly after the tender went out! Its exactly the kind of thing ship builders are used to dealing with.
 
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Pity. You'd think the weight issue could have been addressed early on in discussions with Japanese the government and the ship builders when or shortly after the tender went out! Its exactly the kind of thing ship builders are used to dealing with.
It doesn't hurt for the Australian suppliers to have competition, it will keep them on their toes.
 
It doesn't hurt for the Australian suppliers to have competition, it will keep them on their toes.
The problem is though that the military phased array market isn't exactly the equivalent of the civilian motor vehicle market with all the niches and sub-markets that entails. Every contract you lose? Hurts big time because there aren't that many nations that can (a) afford your product and (b) your own government would let you sell to even if they could afford it!

In CEAFAR's case? As far as I'm aware they don't have many, if any customers outside of Australia. Plus of course the Australian Government owns a share of it!
 
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Like I said, they have a steady stream of work. The Government owns 51 percent of, they are not going to let it flounder. They would just be wanting to leave some work at risk, so that the senior execs have to work for their bonuses.
 
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