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Jeff Head

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thanks Sam and I do see that, also the X shaped rear planes appear to lend more stability???
The X rear planes allow the sub to operate and even come to rest safely on or near the sea floor.

The bottom plane sticking straight down on a more traditional configuration does not allow this as well.

They are actually not more stable while underway...but that can be controlled through computer algorithms to compensate for their being offset at those angles.
 

Air Force Brat

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The X rear planes allow the sub to operate and even come to rest safely on or near the sea floor.

The bottom plane sticking straight down on a more traditional configuration does not allow this as well.

They are actually not more stable while underway...but that can be controlled through computer algorithms to compensate for their being offset at those angles.
So Jeff, without giving away any trade secrets, how often would they actually "bottom the boat", I know that might be practical when you were waiting for a new sub to collect "signatures"
 

Jeff Head

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So Jeff, without giving away any trade secrets, how often would they actually "bottom the boat", I know that might be practical when you were waiting for a new sub to collect "signatures"
Particularly Diesel/Electrics may sit quietly in the littorals on the bottom waiting for targets, for ops, avoiding detection etc.

Nuc's could do the same...but they are much larger and the lower vertical plane makes it difficult to truly bottom out.. Besides...they will go into the deeper water where they can maneuver better.

It is much more possible with the X planes to the rear, and more likely with diesel/electrics so equipped.
 

Air Force Brat

Brigadier
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Particularly Diesel/Electrics may sit quietly in the littorals on the bottom waiting for targets, for ops, avoiding detection etc.

Nuc's could do the same...but they are much larger and the lower vertical plane makes it difficult to truly bottom out.. Besides...they will go into the deeper water where they can maneuver better.

It is much more possible with the X planes to the rear, and more likely with diesel/electrics so equipped.

a friend who was an underwater welder had stated that the Carter has wheels or "landing gear"?????
 

Jeff Head

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Here are three pictures of HMAS Canberra, LHD-02, as she is escorted in Sydney harbor by an Adelaide class Frigate (Australian O.H. Perry variant). Also one (and I really like this one too), of Canberra preparing to sail to Sydney for commissioning, sitting alongside HMAS Adelaide, LHD-01, as she is fitting out in Victoria.


LH02-URE-01.jpg

LH02-URE-03.jpg

LH02-URE-02.jpg

both-canberras.jpg

Now that last one is nice. Shows both Canberras.

We have waited years to see all of these mates. The Canberras, the Ford, the Liaoning, the Queen Elizabeth, the Vikramaditya, the America, the Cavour, the new Izumo.

The next Chinese carrier, the Indian Vikrant, the next Izumo...still more to come!
 
good news :)
HMAS Canberra Carries Out First Open Ocean Docking
Since commissioning in November last year, HMAS Canberra has conducted many landing craft dockings although until now, all have been achieved alongside, within a harbour or a bay.

‘Docking down’ is when the ship sinks the stern into a position in order to launch or recover the Landing Craft through the stern door. When the stern is in the docked down position, the ship lets 4.2 million litres of water, or the equivalent to four Olympic sized swimming pools, into the well dock.

Once the stern door opens, Canberra’s well dock is open to the elements of the sea and weather conditions outside.

Integral to the operations are the well dock team who are positioned on the ‘steel beach’ where the water meets the Heavy Vehicle Deck of the ship.

Canberra’s landing craft can deploy personnel, stores, or equipment ashore, or recover them, when port facilities are inaccessible or do not exist.
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really?
Navy Frigates in Frame Amid Submarines Alert
Options for new powerful new frigates is with the same type of hull with Air Warfare Destroyer with a particular focus on anti-submarine warfare and theatre-level anti-submarine operations
To deal with the growing threat of submarines in the region, the Abbott government is considering buying or building large and powerful new frigates for the navy.
One of several options being considered is to build the frigates on the same type of hull as has been built in Australia for the Air Warfare destroyer. That would produce a 5000 tonne-plus frigate. The current Anzac class is 3600 tonnes.
Having the frigates built in Australia has been seen as one possible way to bridge the so-called “valley of death” faced by shipyards when their current work runs out.
Defence Minister Kevin Andrews has stressed that the priority would be to ensure the navy gets the capability it needs.
Mr Andrews will tell the Australian Strategic Policy Institute’s surface fleet conference in Canberra today that it is expected that by 2030 there will be 300 submarines operating in this region.
While no official costings for the Future Frigate have emerged yet, ASPI analyst Andrew Davies estimated that eight big new vessels could cost close to $20 billion.
Mr Andrews will say the main role of the new frigates will be to deal with submarines.
The Future Frigates are expected to face more demanding operations and will need to be more capable than the Anzac class, Mr Andrews will say.
“They will be required to conduct a range of missions, from low-level constabulary roles through to regional conflict, but with a particular focus on anti-submarine warfare and theatre-level anti-submarine operations,” he will say.
“These requirements reflect the modernisation and expansion of regional submarine fleets that is under way, to the extent that by 2030 approximately 300 submarines are expected to be operating in the region.”
Operating along Australia’s coastline, northern approaches and throughout the Indo-Pacific would require the Future Frigate to have the range, endurance, sea-keeping qualities, survivability and weapons to support prolonged operations throughout the region and, when called to do so, globally.
Because of the threats they could face, the new vessels would be equipped with a range of offensive and defensive systems. They would have to be big enough to have room for future weapons and sensors.
“That’s one of the reasons why there is something of a global trend towards larger-sized frigates,” Mr Andrews will say.
Defence and industry are investigating options that include working out if the AWD hull is quiet enough for anti-submarine operations.
Foreign designs being considered include Britain’s Type 26 warship and the European FREMM frigates used by France and Italy, among others.
Mr Andrews says the government will be guided by key principles, including: the necessity for a well-integrated designer, builder and supplier team, preferencing mature designs of vessels rather than choosing to design a new class of vessel from scratch or undertaking large-scale modification of existing designs; thoroughly testing the capability the navy needed against more readily available military vessels; limiting the amount of changes to the design selected for Australian requirements; and spending more time at the beginning of the project on planning the design and build program.
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