justsomeaussie
Member
That's what they are all forgetting. We *need* 6 operational subs, to do that we need to have 12 in stock. It's not rocket science.
Im not trying to nit pick here...well maybe i am but the Colins are powered by three Hedemora diesels .If the book referred to several posts back ("The Collins Story...") is to be believed, the Hedemora engines were chosen because they were narrow and the required two main engines could be sited side-by-side and reducing the length of the machinery spaces.
The MTU diesels by contrast were wider and could not be sited side-by-side. If fitted they would have had to be sited consecutively, and would result in a lengthening of the hull.
A Collins 2 hull of 9.6m diameter might enable side-by-side MTUs again.
To be fair to the choice (and hindsight is always valuable), the Hedemora diesels seemed to be fine in two classes of Swedish submarines, at least from public information in English. From the outside, it seems that the significantly larger Collins (more drag and higher power requirements) was operationally harder (long transits at higher speeds) on the drive-train than the more leisurely Baltic/coastal duties.
I do note that the latest Swedish subs have MTU diesels.
GF: I'm quoting you for the comment, not necessarily directing reply at you.
Just for my own knowledge, and from the parts you have experience of (I don't need to know specifics), would you say the book is a fair representation of what happened? If it doesn't violate forum rules, even a careful, single word answer would be appreciated.I have the book as well.
I've also worked inside numbers 2,3,4 and worked on 5
I know how wide they are
We all make the occasional gaff mate ,most defiantly me included . Yes the Donks are three abreast. Maybe the book mentions that only 2 MTU's could be fitted instead of 3 Hedemora's? CheersNo, fair enough! I should have taken the 2 minutes to double check that before posting. You know what assuming makes me...
It has been some years since I read the book, and I'm now wary enough at my carelessness to wonder if I didn't misapply the side-by-side rationale regarding the Hedemora engines. Am I at least right about that?
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What about quoting the public domain source? E.g. linking to a newspaper article. You're not saying "this is so", only that someone else says it is.yep, you can still get nailed for it irrespective of whether its in the public domain...
The stats for an F-88 Steyr rifle have been around for donkeys year in the public environment, but that tabulated data for it is still classified as restricted within Army...What about quoting the public domain source? E.g. linking to a newspaper article. You're not saying "this is so", only that someone else says it is.
if you referenced a public domain article you'd be fine. they get a bit twitchy if they see shop talk.What about quoting the public domain source? E.g. linking to a newspaper article. You're not saying "this is so", only that someone else says it is.
Back in my day, I just walked in and had a look at the collins being built, re the size, it was big.I have the book as well.
I've also worked inside numbers 2,3,4 and worked on 5
I know how wide they are
Not just the press, it would also have to affect retention.Speaking of collins press..
Video: Aboard a Collins class submarine
Video on a Collins. Funny enough operating off the NSW coast.
I do feel basing some of them in Sydney would help with the press, if people could clearly see them moving in and out of the harbour going to training exercises then press about them all being broken would be a much harder sell. Subs in Sydney always looks good.
It's because underneath is a genie turning it. I can't believe you asked that question.Also just curious on something with the Collins Class -
Why is it that whenever a Collins class submarine comes out of the water, they always have the propeller covered, something secret or just to make it dry quicker?
A genie? I thought it was because there were tow attachments for the sub to be towed by a whale there?It's because underneath is a genie turning it. I can't believe you asked that question.
Its to hide the fact there is no propeller as they rely on catapillar drives instead and the stern actually houses a lockout chamber capable of docking a Seal Delivery Vehicle.A genie? I thought it was because there were tow attachments for the sub to be towed by a whale there?
Its to hide the fact there is no propeller as they rely on catapillar drives instead and the stern actually houses a lockout chamber capable of docking a Seal Delivery Vehicle.
But wouldn't that sound like a seismic anomaly?Its to hide the fact there is no propeller as they rely on catapillar drives instead and the stern actually houses a lockout chamber capable of docking a Seal Delivery Vehicle.
But wouldn't that sound like a seismic anomaly?
Shhh...don't tell them they may beable to track them if they know what they sound like.It's like a jet engine for the water but sounds like whales humping.
ie biologic flatulence?But wouldn't that sound like a seismic anomaly?