Inclined belts

Started by P3D, May 14, 2008, 01:25:07 PM

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The Rock Doctor

Fair enough, but I don't see virtue in adding to the armor tech tree for the sake of causing more research.  If that tech reaches the end of its effective evolution, so be it.

Korpen

Quote from: P3D on May 15, 2008, 04:06:46 PM
The way I sim inclined armor is with horizontal-line-of-sight thickness, just divide thickness by cosine(inclination). E.g. 25cm plate 108 inclined should be simmed with 25/(0.9848)= 25.39 cm thickness.
Both ways should produce identical results, with the exception that my way overestimates the weight of the transverse bulkheads slightly.


QuoteThe major battle between first-line capital ships was the Battle of Tarakan, with 10-12ky firing distances. Lack of Swiss FC counted here.
The relatively short range was also an effect of the fact that most Dutch ships had very small main guns, mainly 24 and 26cm guns without APC shells. This meant that combat range got shorter. And it is the reason why post war ships mount the largest possible guns, to make impressions at long ranges.

Quotethe problem is that metallurgical advances are pretty limited. Over KC, I can imagine only two techs (giving 10% and +20%). Combining it with inclined stuff might allow one or two more  tech in the 1910-1940 timeframe.
I think that reducing the numbers of tech is a good thing, so the sooner things cap out, the better.

QuoteThe other thing is that it makes the task of the poor guy who is running the battle much easier. Inclination would be one more additional factor to be considered, needing one or two more dice rolls per hit and two additional tables to look up.
Non-issue if one use my suggestion.

Must say that all this "it is a battlecruiser, lets find ways to ban it"- debates are making be quite disillusioned. I have put down more work and thought on that design then I care to admit, and that the first reaction seemed to be outrage over a well integrated feature only because it is not included one way or the other in the rules almost made me resign on the spot. For me this issue is about either encouraging innovative, original and well thought out design, or force player to in practice build identical ship of a set number of fixed designs (like seems to be the case of subs now).
http://www.navalism.org/index.php?topic=898.msg24438#msg24438
Started a long reply, but felt it fitted better in the capital ship thread:
Card-carrying member of the Battlecruiser Fan Club.

P3D

Korpen,

you'd have really liked to see such ships laid down in 1906?:

HMS Hindsight, laid down 1909

Displacement:
   32,944 t light; 34,549 t standard; 37,997 t normal; 40,755 t full load

Dimensions: Length overall / water x beam x draught
   720.00 ft / 720.00 ft x 103.00 ft x 30.00 ft (normal load)
   219.46 m / 219.46 m x 31.39 m  x 9.14 m

Armament:
      8 - 15.00" / 381 mm guns (4x2 guns), 1,687.50lbs / 765.44kg shells, 1909 Model
     Breech loading guns in turrets (on barbettes)
     on centreline ends, evenly spread, 2 raised mounts - superfiring
      12 - 6.00" / 152 mm guns in single mounts, 108.00lbs / 48.99kg shells, 1909 Model
     Breech loading guns in casemate mounts
     on side, all amidships
     12 guns in hull casemates - Limited use in heavy seas
      12 - 3.00" / 76.2 mm guns in single mounts, 13.50lbs / 6.12kg shells, 1909 Model
     Breech loading guns in deck mounts
     on side, evenly spread
   Weight of broadside 14,958 lbs / 6,785 kg
   Shells per gun, main battery: 100
   4 - 21.0" / 533.4 mm submerged torpedo tubes

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   13.0" / 330 mm   489.00 ft / 149.05 m   14.00 ft / 4.27 m
   Ends:   4.00" / 102 mm   231.00 ft / 70.41 m   10.00 ft / 3.05 m
   Upper:   6.00" / 152 mm   489.00 ft / 149.05 m   8.00 ft / 2.44 m
     Main Belt covers 104 % of normal length

   - Torpedo Bulkhead:
      2.00" / 51 mm   489.00 ft / 149.05 m   30.00 ft / 9.14 m

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   14.0" / 356 mm   7.00" / 178 mm      13.0" / 330 mm
   2nd:   6.00" / 152 mm         -               -

   - Armour deck: 2.50" / 64 mm, Conning tower: 14.00" / 356 mm

Machinery:
   Coal fired boilers, steam turbines,
   Direct drive, 4 shafts, 99,313 shp / 74,088 Kw = 27.00 kts
   Range 8,000nm at 12.00 kts
   Bunker at max displacement = 6,206 tons (100% coal)

Complement:
   1,359 - 1,768

Cost:
   £3.419 million / $13.675 million

Distribution of weights at normal displacement:
   Armament: 1,870 tons, 4.9 %
   Armour: 12,122 tons, 31.9 %
      - Belts: 5,171 tons, 13.6 %
      - Torpedo bulkhead: 1,086 tons, 2.9 %
      - Armament: 3,022 tons, 8.0 %
      - Armour Deck: 2,503 tons, 6.6 %
      - Conning Tower: 341 tons, 0.9 %
   Machinery: 4,966 tons, 13.1 %
   Hull, fittings & equipment: 13,686 tons, 36.0 %
   Fuel, ammunition & stores: 5,053 tons, 13.3 %
   Miscellaneous weights: 300 tons, 0.8 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     43,193 lbs / 19,592 Kg = 25.6 x 15.0 " / 381 mm shells or 6.5 torpedoes
   Stability (Unstable if below 1.00): 1.12
   Metacentric height 6.5 ft / 2.0 m
   Roll period: 17.0 seconds
   Steadiness   - As gun platform (Average = 50 %): 60 %
         - Recoil effect (Restricted arc if above 1.00): 0.50
   Seaboat quality  (Average = 1.00): 1.06

Hull form characteristics:
   Hull has rise forward of midbreak
   Block coefficient: 0.598
   Length to Beam Ratio: 6.99 : 1
   'Natural speed' for length: 26.83 kts
   Power going to wave formation at top speed: 50 %
   Trim (Max stability = 0, Max steadiness = 100): 57
   Bow angle (Positive = bow angles forward): 0.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      27.00 ft / 8.23 m
      - Forecastle (20 %):   23.00 ft / 7.01 m
      - Mid (52 %):      23.00 ft / 7.01 m (15.00 ft / 4.57 m aft of break)
      - Quarterdeck (15 %):   15.00 ft / 4.57 m
      - Stern:      15.00 ft / 4.57 m
      - Average freeboard:   19.48 ft / 5.94 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 102.3 %
      - Above water (accommodation/working, high = better): 143.7 %
   Waterplane Area: 54,126 Square feet or 5,028 Square metres
   Displacement factor (Displacement / loading): 102 %
   Structure weight / hull surface area: 188 lbs/sq ft or 917 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 1.00
      - Longitudinal: 1.09
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent
The first purpose of a warship is to remain afloat. Anon.
Below 40 degrees, there is no law. Below 50 degrees, there is no God. sailor's maxim on weather in the Southern seas

Korpen

Quote from: P3D on May 19, 2008, 02:43:02 PM
Korpen,

you'd have really liked to see such ships laid down in 1906?:
Apart from the speed she looks like a superbe with some armour removed...
http://www.navalism.org/index.php?topic=1545.msg20288#msg20288
So I would say we already have ships like that.

But you missed my main point, but i can state it clearer; we do not need more rules, and the ones we got would benefit from a look-over to see which ones can be removed.

Rules should be a help and aid, not straight-jackets to force players to conform to someone's view of what is "right" or "motivated". I have no problems with rules imposing some limits (or I would have never ended up here in the first place), but when pretty much any design that falls outside a quite narrow band of very conventional designs (armour shape, amount of splinter protection or L:B ratio to mention a few reason) gets to hear that it either is outside the rule, or that it should be and that the rules should be corrected to forbid the ship, I think we got a problem.

We already got rules that forbid a huge % of historical designs, especially if we look away from the UK and possibly Germany. An example, Swedish armoured ships (Pansarskepp) never used casemates, but hade the secondaries in turrets from the late 1800;s. Not saying that we should twrow away everyting we got. But.
We really do not need more rules or new limitations added unless there is really good reason (and I do not rate "it look a bit early, or it *might* be a problem as good reason).
Card-carrying member of the Battlecruiser Fan Club.

Ithekro

There is rational progression and then there are rules.  Rational progression would state that a nation that has been at war would likely make use of the leasons learned in that war.  Rule are to keep things from getting to far out of hand.

P3D's ship would be an example of things getting out of hand without progression behind it first.  Most ship classes have a logical predicessor to it.  Naval designers and those that hold the purse stings will make intramental changes to designs as progress happens.  Sometimes there are radical designs, but they usually come from the experiance of war, or the results of someone else's war or contruction projects.

Truely radical designs out of the blue are quite rare as those holding the purse strings and the Admiralty are generally old men who detest change and like the old way of doing things.  Also such leaps in technology are also rare.  Plsu getting those that hold the purse strings to fund a new project that is grossly twice the size of the previous model would be rare to unheard of unless it somehow helped them in the process (or the military wants it and controls the purse strings).

P3D

Quote from: Korpen on May 19, 2008, 03:23:55 PM
Quote from: P3D on May 19, 2008, 02:43:02 PM
Korpen,

you'd have really liked to see such ships laid down in 1906?:
Apart from the speed she looks like a superbe with some armour removed...
http://www.navalism.org/index.php?topic=1545.msg20288#msg20288
So I would say we already have ships like that.
Yes, a measly 7kts speed difference, negligible in all combat circumstances ::).

Quote
But you missed my main point, but i can state it clearer; we do not need more rules, and the ones we got would benefit from a look-over to see which ones can be removed.

Rules should be a help and aid, not straight-jackets to force players to conform to someone's view of what is "right" or "motivated". I have no problems with rules imposing some limits (or I would have never ended up here in the first place), but when pretty much any design that falls outside a quite narrow band of very conventional designs (armour shape, amount of splinter protection or L:B ratio to mention a few reason) gets to hear that it either is outside the rule, or that it should be and that the rules should be corrected to forbid the ship, I think we got a problem.

We already got rules that forbid a huge % of historical designs, especially if we look away from the UK and possibly Germany. An example, Swedish armoured ships (Pansarskepp) never used casemates, but hade the secondaries in turrets from the late 1800;s. Not saying that we should twrow away everyting we got. But.
We really do not need more rules or new limitations added unless there is really good reason (and I do not rate "it look a bit early, or it *might* be a problem as good reason).

I see no huge % of not allowed historical designs (laid down after 1900). Panserskepp, Fylgia, Moltke and Goeben (simming for SHP), Swift, three French ACs, the US ships with superimposed turrets (if there'd been any, they would've been allowed, though) and that's it.
Players insist that any invention that existed should be available for their (thus every) country. I'd rather have few inventions that were followed only 20 years later be ignored than make it available for everyone.
Saying that, I'd have chosen a different tech approach, if continuity from N2verse wouldn't have been a priority.
And justifying post-Jutland ships designs after the lessons learned from the Battle of Port Arthur is IMHO too much of a stretch.
The first purpose of a warship is to remain afloat. Anon.
Below 40 degrees, there is no law. Below 50 degrees, there is no God. sailor's maxim on weather in the Southern seas

P3D

Quote from: Korpen on May 19, 2008, 10:34:40 AM
Non-issue if one use my suggestion.
How many people would be able to determine the effect of inclination at arbitrary target angles and angle of fall, even for a single caliber of guns, without spending several hours on how to figure it out? Or do you want to restrict the use of inclined belts to those who can do that? Would you trust everyone to get at least roughly the same results as you?
The first purpose of a warship is to remain afloat. Anon.
Below 40 degrees, there is no law. Below 50 degrees, there is no God. sailor's maxim on weather in the Southern seas

Korpen

#22
Quote from: P3D on May 19, 2008, 04:06:43 PM
I see no huge % of not allowed historical designs (laid down after 1900). Panserskepp, Fylgia, Moltke and Goeben (simming for SHP), Swift, three French ACs, the US ships with superimposed turrets (if there'd been any, they would've been allowed, though) and that's it.
You forgot a few, like HMS Tiger, HMS Lion, HMS Princess Royal IJA Kongo , the Italian Caracciolo-class battleships (never compleated), Monmouth Class ACs (6" turrets), certain i can find more if i do a real search for them.

QuotePlayers insist that any invention that existed should be available for their (thus every) country. I'd rather have few inventions that were followed only 20 years later be ignored than make it available for everyone.
Saying that, I'd have chosen a different tech approach, if continuity from N2verse wouldn't have been a priority.
I think that argument is fauly, as the question is that in allot of cases, hindsights is not an asset, it is a liability. Classical one; All or nothing protection is no advantage below 12-15hm as the number of hits is likely to be quite large during an engagement, and that those range penetrations are still quite likley. It is rare for features on a ship to be present without a decent reason, and designers usally had reason for building ships the way they did.
So why, in itself would it be a problem if people mounted say 6" guns in turrets?

QuoteAnd justifying post-Jutland ships designs after the lessons learned from the Battle of Port Arthur is IMHO too much of a stretch.
Unlike the no motivations that i have seen for the French 10x38 monsters, the UNK ships with 38cm belts or the Orange 29kts cruisers, all of the out of the blue?
I think i have stronger arguments for the design choices i made in this ship then i have seen for any other design here.
Card-carrying member of the Battlecruiser Fan Club.

P3D

#23
Quote from: Korpen on May 19, 2008, 04:42:52 PM
You forgot a few, like HMS Tiger, HMS Lion, HMS Princess Royal IJA Kongo , the Italian Caracciolo-class battleships (never compleated), Monmouth Class ACs (6" turrets), certain i can find more if i do a real search for them.

HMS Lion and Princess Royal - they can be laid down 15 months later in Nverse, rest below 80,000SHP and late.
I don't see anything that would make simming Caracciolo impossible (at least if you take it into account that 28kts was designed trial speed). You have 4 month delay in earliest lay down date.
The propulsion techs were designed to allow most (say 95%) of the historical designs available at the same laying down date while having techs, but as few as possible - if you allow for a 10% SHP margin, or for some minimal delay all is covered.

The 'no 6" turret until 191x' rule was intentional.

QuoteUnlike the no motivations that i have seen for the French 10x38 monsters, the UNK ships with 38cm belts or the Orange 29kts cruisers, all of the out of the blue?
I think i have stronger arguments for the design choices i made in this ship then i have seen for any other design here.
What argument besides the 'bigger  guns on a faster ship' one?
The first purpose of a warship is to remain afloat. Anon.
Below 40 degrees, there is no law. Below 50 degrees, there is no God. sailor's maxim on weather in the Southern seas

Ithekro

#24
Hmmm, if I recall you are arguing about the belt armor, not the guns on the ship.  Belt armor adjustments on the table I use is fairly easy...if the difference is enough to justify the armor acting like it is thicker, then it goes up a step on the chart, otherwise it does nothing different.  On Korpen's design, within the armor thickness standards of the system I use...it probably won't even go up a step unless the armor quality is better than KC.  Then it may go up a to the next bracket.

It has 250mm of armor.  Should be KC armor at this point.  Effective incline suggests 25mm more armor, so 275mm equivalent..nearly 11 inches of armor...that is still "aaa" armor protection either way as defined by Jane's Fighting Ships in 1914.  So it does effectively nothing game wise from my point of view.  At least for this vessel. 

The "A(7)" penetration guns (British 13.5" -  American 14" - German 12"/50 cal?) used by most navies shouldn't have a problem with it except at extreme ranges with a slight chance of resisting at long ranges.  Even the 12" guns of most nations ("A(3)" - "A(6)" depending on quality and barrel length) shouldn't have too much of a problem with it except at extreme (over 100hm) and long ranges (over 60hm).

Desertfox

QuoteYou forgot a few, like HMS Tiger, HMS Lion, HMS Princess Royal IJA Kongo , the Italian Caracciolo-class battleships (never compleated), Monmouth Class ACs (6" turrets), certain i can find more if i do a real search for them.
Don't bother. I asked many of these same question quite a while back. Mainly because the rules seemed target at NS specificlly. Remember my 'Speed is all' designs? I had to scrap all the follow on designs despite them having a clear back history and design rationale, due to the rules. I could build a 24knot fast battleship with 8x14" guns in 1905 (which clearly has hindsight involved) but could not build a 27knot cruiser with 8x8" guns.

Looking at some of the crazier unbuilt historical designs out there, I would say that if anything the rules promote better more balanced ships. Just look at the USN 1912 BC designs...
"We don't run from the end of the world. We CHARGE!" Schlock

http://www.schlockmercenary.com/d/20090102.html

P3D

Ithekro:
Jane's penetration figures and determination mechanism is obsolete, imho. They are based on the Russo-Japanese war.

Desertfox:
We did not want WWII CAs (even if only 27kts) to appear in 1909. As Armored Cruisers are supposed to use BB machinery, the same tech should be valid for them. I won't repeat my argument the Nth time why such rules were necessary.

Besides, the 'turbine engine year' was not even determined uniformly in N2-verse. Players had ships with 1905 and 1907 (even designs with 1908/09 ones, but I don't remember exactly) engines laid down in the same year with the same tech. The difference is significant.
The first purpose of a warship is to remain afloat. Anon.
Below 40 degrees, there is no law. Below 50 degrees, there is no God. sailor's maxim on weather in the Southern seas

Ithekro

True, but even with the advent of Fire Contol, our "effective" combat ranges are no greater than those of the Russo-Japanese War until the second Fire Control tech is finished and applied on warships.  It is just easier to hit at this point.  Our shells and gun designs are not yet above those in use during the Jane's system era.  Almost, but not yet.  The 15" gun of the QE-class is the top end that the Jane's system could use.  They briefly had the 16" guns from the Japanese Nagatos and the American Colorados but dropped the system around that time.  A(9+) penetration and armor thicknesses were just too much for the 1898 system to handle.

Korpen

Quote from: Ithekro on May 19, 2008, 07:54:32 PM
True, but even with the advent of Fire Contol, our "effective" combat ranges are no greater than those of the Russo-Japanese War until the second Fire Control tech is finished and applied on warships. 
Well i happily admit that my expectations of what the first level of FC is capable of went up significantly with the changes to the FC tech.
That said I am so presumptive as to count on that ships here with the best possible FC that we can develop is about as capable as the historic ships at the same date. The present FC level is the only one until 1916, so I think it is perfectly logical to look at early ww1 for a guide to practical capability.
Generally I think that adding 50-60% on the range as maximum under good conditions makes good sense, so under good conditions ship with out FC can score hits regularly out to about 13km, and the first FC tech out to around 18km under good conditions. I do not expect that kind of ranges while fighting in a rainy, stormy and foggy winter day in the North Sea.
Card-carrying member of the Battlecruiser Fan Club.

Korpen

Quote from: P3D on May 19, 2008, 05:04:34 PM
Quote from: Korpen on May 19, 2008, 04:42:52 PM
You forgot a few, like HMS Tiger, HMS Lion, HMS Princess Royal IJA Kongo , the Italian Caracciolo-class battleships (never compleated), Monmouth Class ACs (6" turrets), certain i can find more if i do a real search for them.

HMS Lion and Princess Royal - they can be laid down 15 months later in Nverse, rest below 80,000SHP and late.
I don't see anything that would make simming Caracciolo impossible (at least if you take it into account that 28kts was designed trial speed). You have 4 month delay in earliest lay down date.
The propulsion techs were designed to allow most (say 95%) of the historical designs available at the same laying down date while having techs, but as few as possible - if you allow for a 10% SHP margin, or for some minimal delay all is covered.
While it does allow for the majority of ships, when talking about battlecruisers, there are more historic ships disallowed then allowed. But that is in line with our rule to discourage fast capital ships. And if we go by speed rather then shp, the difference is even larger, as most BCs seemed to get about 1kts more speed out of the same shp as a SS ship.If minimal delay is "waiting for the next tech level" or "extend the rule to fit" then sure, everything fits.

QuoteThe 'no 6" turret until 191x' rule was intentional.
That I am well awere of, but it does disallow quite a large number of historic designs.

Quote
QuoteUnlike the no motivations that i have seen for the French 10x38 monsters, the UNK ships with 38cm belts or the Orange 29kts cruisers, all of the out of the blue?
I think i have stronger arguments for the design choices i made in this ship then i have seen for any other design here.
What argument besides the 'bigger  guns on a faster ship' one?
*sigh*
I think I have already posted that one, repeatedly.

I have no real problems with tech limiting things differently from IRL, but i do have an huge problem with the hypocritical argument of blocking one context motivated feature with the "too early"-argument while at the same time forbidding features witch were common IRL with what amount to a "I do not want it"-argument.
Card-carrying member of the Battlecruiser Fan Club.