Ongoing debate on Australia's SEA 1000 future submarine requirements.

For my preceding post "Australian SEA 1000 Future Submarine, shipbuilding-budgeting issues"   http://gentleseas.blogspot.com.au/2013/11/australian-naval-shipbuilding-and.htmlAnonymous has commented as follows:

"Anonymous said...

So what is the military issue behind a bigger son of Collins-class?

Range of a Collins-class submarine today is reached by even smaller submarines like Type210mod or A26. To gather intelligence a small submarine is better suited and a diesel-electric submarine is even quieter than a large Virginia-class submarine.

What about crew size? A Virginia-class submarine is manned with about 130 men. A modern Type210mod needs just 15 men (21 for 3-watch). Therefore 3 crews of Virginias 26 small submarines could be manned. For price of one Virginia class submarine Australia could get at least 4 Type210. For A$30billion Australia could buy more than 40 Type210mod.

 

This submarine could be built in Australia. The advantage of building a steady stream of small submarines is to include improvements in the next batch and to keep the knowledge alive how to build them.

Just 3 operational submarines are easier to track and even very fast submarines can’t be everywhere at once. Also a fast submarine is very noisy. A trip around Australia is roughly 7,000 nm. For each submarine 2,300 nm to patrol. With 26 submarines the area is less than 300 nm. With just 3 operational submarines it is very hard to lose one with a crew of over 100 men.

US combat System due to US weapons? What a nonsense! South Korea ChangBogo-class (Type 209) can fire Harpoon missiles. If Raytheon dislikes selling some Tomahawks Australia could just ask Israel about some Popeyes. Israel operates Popeyes on Dolphin-class submarines (Type 209).

Oh, more range. What about submarine tenders? Even the US Navy has a few.

Going big will result in too few submarines. Going to Virginia will add a capability already existing in the Pacific and Indian Ocean. After 6 or 12 small submarines Australia can still switch to a larger submarine type but then with better knowledge.

 

November 22, 2013

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On this current post I am responding with:

Hi Anonymous

The HDW 210mod and all existing SSKs (including the current sized S-80) fall far short of Australian SEA 1000 (future submarine) requirements.

The SEA 1000 submarine needs range, endurance, speed, multi-mission capabilities and weapons load far above existing SSKs.

If you compare the totality of HDW 209, 210mod ("Ula"), 212 or 214's published capabilities with Collins http://en.wikipedia.org/wiki/Collins-class_submarine you'll see the difference.

Note that SEA 1000 needs higher capabilities than even the Collins, especially for the added weapons load of 8+ Tomahawks in a VLS and an AIP capability (achieved by "usual" AIP, advanced batteries or nuclear).

Ideally an SEA 1000 should be operationally autonomous (from US SSNs) and hence capable of shadowing a fast moving SSN for at least a week.

The crew size of 135 for a Virginia being much larger than for SSKs (or the 60 for a future French Barracuda SSN) is indeed an issue.

Tomahawk is a requirement because Harpoon missiles are far too short in range for many land attack scenarios and because Tomahawk is US combat system compatible.

There are too many current uncertainties about the suspected Israeli SLCM Popeye. Popeye may include considerable "off the books" US, French and/or Indian content making it difficult for Israel to export.

Regards

Pete