ATLA will certainly be a program to keep an eye on.
It measures L×B×D:10.1m×1.8m×1.8m and manufactured by MHI.
It adopts a modular structure and consists of "UUV main module" composed of head, energy, and tail module, and "additional module" sandwiched between them. This picture's prototype is main module only.
The energy module is AIP with fuel cell + secondary battery (probably li-ion) system; it will operate for a week at 3-4 knots cruising.
Additional modules include an oceanographic equipment module(Judging from the illustration, probably a multibeam depthfinder) and installing underwater equipment(maybe naval mine or ASW sensor) module, and so on.
There was an article about this XLUUV from Naval News.Japan's ATLA (Acquisition, Technology & Logistics Agency) showcased for the first time the design of its XLUUV at the DSEI Japan defense show.www.navalnews.com
Apparently I mistaked: It powered only by Li-ion battery, not fuel cell.
It is unclear whether this change is due to improved battery performance or simply because this XLUUV is still a prototype.
Also, the article notes that this XLUUV has four propellers, a feature of more smaller UUVs in general.
My guess is that the reasons are probably 1) to ensure reliability, 2) to ensure maneuverability at low speeds/stops where rudder is difficult to work with.
In exchange, it becomes inefficient at high speed cruise.
I believe this XLUUV is developing with the primary purpose of slowly advancing long distances without assistance and laying mines precisely at designated locations.
Yes, I commented on that in my post edit.ATLA will certainly be a program to keep an eye on.
Here is the Naval News article on ATLA.
Japan's ATLA (Acquisition, Technology & Logistics Agency) showcased for the first time the design of its XLUUV at the DSEI Japan defense show.www.navalnews.com
They are stopping the Mogami build at 12 and developing an improved Mogami for the next 10 with the first of class to be laid down in 2024.The Japanese navy is developing a new stealthy frigate design with a manning level of 90 ,perhaps showing it can be done, Im not sure that this type of ship would add though to the capabilities of the R.A.N
Japan is Looking for a New Class of FFM Frigates - Naval News
30FFM: Japan’s Next Generation Frigate Taking Shape at Two Shipyards - Naval News
The JMSDF isn't replacing the Mogamis. It's just reducing the number of Mogamis it'll buy & instead buying a new frigate, which appears to be an improved Mogami. They'll serve alongside each other. As usual, the JMSDF is doing incremental improvement.I understood the 30FFM to be that replacement for the Mogami ,it also may be sold to Indonesia ,
Japan’s New Mogami-Class Frigates Show What The U.S. Navy’s Littoral Combat Ships Could Have Been (forbes.com)
Very typical of the Japanese to go for incremental improvement. 12 is still a large of class for the Japanese. Also the threat is also changing. Japan also needs to increase its level of automation as crewing large ships is already a difficultly and will continue to do so.Looks like the JMSDF is going to stop production of the Mogami Class at 12 and move to an evolved Mogami design from 2024. There is also several reports of design issues.
I am relieved to hear that this doesn't seem to be a critical problem of new developed equipment such as OYQ-1 or OPY-2.Japan is Looking for a New Class of FFM Frigates - Naval News
Looks like the JMSDF is going to stop production of the Mogami Class at 12 and move to an evolved Mogami design from 2024. There is also several reports of design issues.
All diesel is not possible.I wonder if they will go for a different propulsion arrangement, perhaps an all diesel variant for enhanced range, perhaps different weapons and sensor fitout too.
They'll be mean ships when completed and fully fitted out. 128 VLS is one mean loadout.A n article describing the new missile ships that Japan will be building. 128 SMS (mixture of 3s and 6s). Radar will be SPY7 thus being the third class to use this LM radar.
Local media reports shed new details on Japan's future ASEV - Aegis System Equipped Vessels. They will feature 128 VLS cells for SM-3 and SM-6www.navalnews.com