For our existing frigate and cruiser designs, there's a strong incentive to squeeze because the one-megaton berths present a sharp constraint on ships' total size. Packing the maximum possible performance into a hull of fixed size, regardless of future refit potential, then becomes rather more tempting.

The Cardassians actually have a similar problem, arguably even more so than we do, because so many of their berths are 1.2-megaton facilities that are just exactly the right size to fit a Jaldun. They can't afford to 'go big' because only a fraction of their total berths are significantly larger than a Jaldun, and even those are bigger by a limited margin. By contrast, we have a LOT of explorer berths and have ample political support for building more if we need to, which means we are much more free to contemplate 'leapfrogging' the Cardassians in tonnage and starting a class of 1.5 or 1.8-megaton cruisers as our next generation cruiser design.

...

That reminds me of the recent discussion of starting a new heavy cruiser design, along with the proposed new generalist frigate. Suppose the refits to the Jalduns* really do give them combat performance superior to the Renaissance as SWB predicts (he's projecting C5 S4 H5 L6 P4 D4 for the Jaldun-bis and C7 S3 H5 L6 P3 D5 for the Kaldar-bis). In that case, it becomes exceptionally desirable for us to counter the Jaldun-bis with our own heavy cruiser class that approximates the Kaldar-bis in performance.

Personally I think he may be overestimating the refit ships' performance, but I wouldn't want to bet the farm on it. I can see the logic- the Jaldun remains a generalist ship but considerably uparmored to double down on the advantage of durability the Jalduns already have relative to most Starfleet designs, while the Kaldar becomes a "pocket battleship" that is in effect a tougher version of the Lorgot. On the other hand, it begs the question of why the Cardassians are still building Lorgots at all, unless they have a refit version of THAT, too.
___________

*In pursuance with Warsaw Pact naming habits, I dub this class the Jaldun-bis. :D

...

On a side note, I suspect that some of the extra tonnage of the Jalduns and Kaldars may go into things that don't affect naval combat performance. For example, large cargo bays that enable them to transport supplies as we've seen references to them doing. Or large ground troop contingents so that they can do 'pacification' and military occupation missions more effectively.
 
I do hope that the larger refit estimates are wrong - because if they are right we will find ourselves under immense pressure to produce a new cruiser line sooner than we have forecast which will throw a lot of our predictions far out of line.

The Renaissance is still considered a new design with only the first wave finished building - i don't want to start a successor class design already!
 
I do hope that the larger refit estimates are wrong - because if they are right we will find ourselves under immense pressure to produce a new cruiser line sooner than we have forecast which will throw a lot of our predictions far out of line.

The Renaissance is still considered a new design with only the first wave finished building - i don't want to start a successor class design already!

I don't think it will be a Rennie successor, there is room in our doctrine for a heavy cruiser. Basically it will be the successor to the Excelsior-A role, but more efficient. Along those lines we should work out a plan for existing Excelsior-As, do they retire in 15ish years, or do we plan a Excelsior-B refit.

If that refit means they are more economical do we just build more Excelsior-As now and forget about a new Heavy Cruiser.

Regardless of whichever direction we take I think we should add 2mt berths whenever possible so either option does not impact capital ship builds or the frigate/aux builds.
 
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And to be fair, I can see the lorgot performing reasonably well as part of a massive fleet ball. Especially if they have some kind of doctrine perk that lets it hide behind their cruisers and reduce its own chances of being targeted.

They have Combined Fleet iirc, so if there's more escorts than Lorgots they'll get +1L and +10% Evasion.

I don't think it will be a Rennie successor, there is room in our doctrine for a heavy cruiser. Basically it will be the successor to the Excelsior-A role, but more efficient. Along those lines we should work out a plan for existing Excelsior-As, do they retire in 15ish years, or do we plan a Excelsior-B refit.

If that refit means they are more economical do we just build more Excelsior-As now and forget about a new Heavy Cruiser.

There is no reason to retire the Excelsiors. We have more of them than any other ship, and the main advantage of them is that many will begin to start gaining Blooded status soon. They are also built to last like our other Explorers (see the Cheron) and since canonically they last into the 2360s they should have a lot of life left in them. I'm gonna guess that based on their weight there's space for refit, too.

As far as a Rennie successor goes, the proposed heavy cruisers tend to be significantly more capable for only a very small additional cost. We'd be better off building the heavy cruiser instead of the Rennie.
 
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The Excelsior was blessed by hull space that wasn't used. Phaser arrays could create a refit that will be about as good as the refit we just had. We'll see the Excelsior in use for about another 40 years.

In production, perhaps not, but in deployment? Long time.

e: On a side note we fortuitously blessed the Ambassador in the same way *wink*
 
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The Excelsior was blessed by hull space that wasn't used. Phaser arrays could create a refit that will be about as good as the refit we just had. We'll see the Excelsior in use for about another 40 years.
I suspect so. Given the two most recent Excelsior Build Orders were NCC-2027 and NCC-2028... that's be a lot of hulls to try to replace!
 
Given that Rule The Waves is one of the inspirations for this quest...

For those who don't know what that's about...well, let me sum up from a Rule The Waves thread.

"We're cursed."

"Uh, section chief, that's kinda str-"

"No! You don't understand! Every time I design a battleship, it's got all the latest tech, and then...and then...we get something that makes it obsolete. I just want to build a ship that isn't totally obsolete at launch! I mean...is that too much to ask? I build a ship with wing turrets, and before she launches we have four centerline guns. I build a ship with superfiring X turrets, and we have superfiring B before it completes. I build a ship with four gun turrets, and the Admiralty buys 14" guns from the Brits and starts saying all new construction will have them! They're deliberately undermining me now, it's not even that the research breakthroughs are happening! I should-"

"Sir! Please calm down!"
 
We are so going to need more Excelsior-A class vessels in the GBZ.

How many can we scare up without crippling something else by the end of 2318?
 
It's about on the increase of the Excelsior-A refit, which may well be a similar era design. Remember also that both cruiser designs are large cruisers of considerable weight, not efficient squeezes that the Rennie and Connie-B are. I would expect there to be more room to adjust.
An Excelsior is about twice the Jaldun and half again a Kaldar so I would expect them to be able to refit more than a smaller ship. Honestly I am expecting +1 C, +1L and +1S or D with Kaldar likely picking up +1S as a command ship.
 
They are also built to last like our other Explorers (see the Cheron) and since canonically they last into the 2360s they should have a lot of life left in them. I'm gonna guess that based on their weight there's space for refit, too.

As far as a Rennie successor goes, the proposed heavy cruisers tend to be significantly more capable for only a very small additional cost. We'd be better off building the heavy cruiser instead of the Rennie.

Im of the opinion that we should not be taking cues off cannon-timeline as there is a lot of frankly illogical decisions there.

That said I do think the Excelsior hull can be pushed further with another refit, its more a question of if the Excelsior-B eventual existence means we should still be producing it instead of looking for a new Heavy Cruiser.

The Excelsior hull was originally launched 31 years ago (2287)

Excelsior [511m, 2.3mt]
C6 S5 H4 L5 P5 D6
Cost [230br 150sr, 4 years], Crew [O-6, E-5, T-5]
Stat Avg: 5.17

The A refit was available 5 years ago (2313)

Excelsior-A [511m, 2.3mt]
C7 S6 H4 L6 P6 D6
Cost [230br 160sr, 4 years], Crew [O-6, E-5, T-5]
Stat Avg: 5.83


Then we compare it against possible Heavy Cruiser competition

Enlightenment [1.54mt]
C7 S7 H5 L6 P7 D6
Cost [160br 115sr, 3 years], Crew [O-4, E-5, T-4]
Stat Avg: 6.33

The Stat avg places it exactly between a Renaissance (4.33) and an Ambassador (8.33). It uses a 18.7% less crew, and has a 35% lower cost/stat ratio then the Excelsior-A while increasing stats 8%.

For reference the Constitution-B to Renaissance switch was crew neutral, a 12% lower cost/stat ratio, and raised the stat average the same 12%.

I can't see any Excelsior-B refit that would make it logical to continue Excelsior production, even if we could produce B's right now.
 
So on the question of Excelsior replacements, what is the effective difference between a Light Explorer and a Heavy Cruiser? I mean, obviously one uses a cruiser frame and one an explorer frame, but in terms of bang for our buck?
 
So Cardassian refits? Not exactly the best now is it? Well, things are about to get interesting.
 
So on the question of Excelsior replacements, what is the effective difference between a Light Explorer and a Heavy Cruiser? I mean, obviously one uses a cruiser frame and one an explorer frame, but in terms of bang for our buck?

My assumption - range capability and space allocated to P functions. The Explorer is more capable of running well away from replenishment sources and has better crew/diplomacy support areas.

This does mean, if equal masses, the cruiser is the better fighter.
 
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So on the question of Excelsior replacements, what is the effective difference between a Light Explorer and a Heavy Cruiser? I mean, obviously one uses a cruiser frame and one an explorer frame, but in terms of bang for our buck?

I guess one difference is that presumably a light explorer could be used for 5 year missions, although I'd personally prefer not.
 
So on the question of Excelsior replacements, what is the effective difference between a Light Explorer and a Heavy Cruiser? I mean, obviously one uses a cruiser frame and one an explorer frame, but in terms of bang for our buck?
There are recent designs accessible in the SDB thread, but generally, a light explorer will have considerably greater build time and SR cost, slightly less in crew costs, but have extended capabilities under doctrine (including the 1 per event restriction and 50% greater firing weight). A light explorer would also have somewhat more space, as the smallest hull we have is the 1800kt, while a cruiser can be built on the 1500kt. This extra hull is also the main cost of the considerable SR bump.
 
How far out tech wise is the proposed Enlightenment Cruiser before prototyping could even begin?
 
My main issue with a medium-heavy cruiser is that we don't have many berths in the 1.5-2.5 mt range. We could use 3 mt but then we're competing with Ambassadors and any new Excelsiors. If we can commit to a few more berth expansions over the next couple years then I'd be more okay with if.
 
So on the question of Excelsior replacements, what is the effective difference between a Light Explorer and a Heavy Cruiser? I mean, obviously one uses a cruiser frame and one an explorer frame, but in terms of bang for our buck?
To me a Light Explorer are old Explorers no longer used for the EC, basically what the Excelsior will be after we get the Ambassadors rolling out. They are not something I feel like we should be building, instead just holding onto the existing ships and putting them through refits as they are very good ships still and we have already constructed them. Plus the ones covering sectors have a good chance of being blooded or better.

Heavy Cruiser is our newest cruiser, basically the Renaissance right now and is a production model ship. Light cruisers are like light explorers the previous model that is no longer in production but still useful.


So are we talking about doing a Medium/Heavy Cruiser next instead of the (Ugh) 'Flower'? or are we waiting still?

Not really, the cruiser designs are using T3 sub frames and we have yet to research T2 for cruisers. That will be another decade of research before we can prototype and build the Renaissance replacement.
 
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