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On Fri, 4/22/16, xxxxxx@gmail.com <xxxxxx@gmail.com> wrote:

 Subject: Re: [TML]About That Apocalypse . . .
 To: "tml" <xxxxxx@simplelists.com>
 Date: Friday, April 22, 2016, 8:05 AM

 On 21 Apr 2016 at 21:45,
 Richard Aiken wrote:

 >
 Going by the displacement given for the cruisers (75,000
 dtons) and
 > the RL historical precedent
 that battleships are generally twice the
 > mass of cruisers, the displacement of the
 Fair Phyllis *should* be
 > 150,000
 dtons. 

 I'd say x3 is
 a more common ratio. Dreadnoughts (and battlecruisers) were
 roughly
 25KTons (smaller if pre-WWI USN
 ships, because congress wouldn't pay for bigger).
 Cruisers were ~7KTons, and not yet at the
 10Kton mark.

 Treaty
 battleships were capped at 35KTons, and cruisers at 10KTons.
 By WWII when
 cruisers had grown to
 15-16KTons, battleships were in the 45KTon+ range.

 BTW, destroyers were about
 1/5th to 1/3rd the displacement of cruisers, giving a
 pleasing x3/step increase (very pleasing if you
 happen to use GURPS Spaceships for
 your ship
 design work).

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Pre-deadnaughts were a little different though.

I've seen some designs from the UK where AC's (armored cruisers) displaced almost as much as the old BB's. Way more than 10KT's.
Immediately noticeable was the difference in armament & speed but I'm sure there was also a big diff in armor.

Also, some of Lord Fisher's BC's actually displaced more than some of the *real* Dreadnaughts.

Back in ye olde dayes, I read of British ships-of-the-line that were 54 gunners.

That sure sounds like a 'tweener'.

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