Grays Harbor Designs

[Trojan]

that sounds like one heck of a battlecruiser just be careful not to make the same mistakes the British made with them or since i notice u make you au very realistic by not making just perfect designs maybe allow for some "mistakes" to be made in

[APDAF]

Looking over this springsharp for the Sanxay Straits, I came to a realization. Its not a bad ship. I also noticed that it has a "natural" speed of 26 knots, so I redid the numbers, reran it, and still came up with the same results. So, I've been thinking... instead of considering this to be an underarmored battleship, it could very well be a damn fine battlecruiser instead. I believe I may reclassify this thing to a battlecruiser.

Like what I first said about the class.

[eltf177]

One thing I did notice, the entire Secondary Battery needs to be wet. That gives you a bit more hull strength to play with...

[Zephyr]

Looking over this springsharp for the Sanxay Straits, I came to a realization. Its not a bad ship. I also noticed that it has a "natural" speed of 26 knots, so I redid the numbers, reran it, and still came up with the same results. So, I've been thinking... instead of considering this to be an underarmored battleship, it could very well be a damn fine battlecruiser instead. I believe I may reclassify this thing to a battlecruiser.

Like what I first said about the class.

Yup, you surely did.

[Zephyr]

Finished up something else I've been fiddling with, a scout cruiser from 1922. This class was the last group of dedicated scout cruisers built for the GHRN, and the first ships of the GHRN designed with floatplane catapults. (As a side note, its also the first design I've done from scratch that springsharp actually thought was a decent seaboat. )

Designed as long range scouts, they had ample space for the crew. In 1925 when the scout cruiser classification was deleted, they were reclassified as light cruisers and given that they had such good facilities and adequate armament, they were frequently tasked as flagships for destroyer squadrons and convoy escort groups. Their scout capabilities made them nearly ideal for the latter role. Their AA armament, while considered sufficient when laid down, was augmented twice, once in 1935 as the single 2 Pdrs were replaced with twin 40mm, and again in 1939 when the AA armament was doubled with additional 40's and some twin 20's for light AA.

So, here she is, the HMS Lilith of 1922


Lilith Class, Grays Harbor Scout Cruiser laid down 1919

Displacement:
7,696 t light; 8,012 t standard; 8,995 t normal; 9,782 t full load

Dimensions: Length overall / water x beam x draught
514.37 ft / 482.00 ft x 56.00 ft x 24.00 ft (normal load)
156.78 m / 146.91 m x 17.07 m x 7.32 m

Armament:
8 - 6.00" / 152 mm guns (4x2 guns), 108.00lbs / 48.99kg shells, 1919 Model
Breech loading guns in turrets (on barbettes)
on centreline ends, evenly spread, 2 raised mounts - superfiring
8 - 4.00" / 102 mm guns in single mounts, 32.00lbs / 14.51kg shells, 1919 Model
Breech loading guns in deck mounts
on side, all amidships
12 - 1.57" / 40.0 mm guns (5 mounts), 1.95lbs / 0.88kg shells, 1919 Model
Breech loading guns in deck mounts
on side, evenly spread, 3 raised guns
Weight of broadside 1,143 lbs / 519 kg
Shells per gun, main battery: 200
6 - 21.0" / 533.4 mm above water torpedoes

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 4.00" / 102 mm 298.84 ft / 91.09 m 8.65 ft / 2.64 m
Ends: 1.50" / 38 mm 183.14 ft / 55.82 m 8.65 ft / 2.64 m
Upper: 2.00" / 51 mm 298.84 ft / 91.09 m 8.00 ft / 2.44 m
Main Belt covers 95 % of normal length
Main belt does not fully cover magazines and engineering spaces

- Torpedo Bulkhead:
3.00" / 76 mm 298.84 ft / 91.09 m 22.03 ft / 6.71 m

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 6.00" / 152 mm 4.00" / 102 mm 6.00" / 152 mm

- Armour deck: 2.00" / 51 mm, Conning tower: 4.00" / 102 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 74,232 shp / 55,377 Kw = 32.00 kts
Range 7,600nm at 15.00 kts
Bunker at max displacement = 1,771 tons

Complement:
461 - 600

Cost:
£1.655 million / $6.619 million

Distribution of weights at normal displacement:
Armament: 143 tons, 1.6 %
Armour: 2,727 tons, 30.3 %
- Belts: 731 tons, 8.1 %
- Torpedo bulkhead: 731 tons, 8.1 %
- Armament: 545 tons, 6.1 %
- Armour Deck: 683 tons, 7.6 %
- Conning Tower: 37 tons, 0.4 %
Machinery: 2,636 tons, 29.3 %
Hull, fittings & equipment: 2,190 tons, 24.3 %
Fuel, ammunition & stores: 1,299 tons, 14.4 %
Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
5,789 lbs / 2,626 Kg = 53.6 x 6.0 " / 152 mm shells or 1.3 torpedoes
Stability (Unstable if below 1.00): 1.09
Metacentric height 2.5 ft / 0.8 m
Roll period: 14.9 seconds
Steadiness - As gun platform (Average = 50 %): 76 %
- Recoil effect (Restricted arc if above 1.00): 0.63
Seaboat quality (Average = 1.00): 1.53

Hull form characteristics:
Hull has raised forecastle, rise forward of midbreak, low quarterdeck
and transom stern
Block coefficient: 0.486
Length to Beam Ratio: 8.61 : 1
'Natural speed' for length: 25.40 kts
Power going to wave formation at top speed: 63 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 37.00 degrees
Stern overhang: 6.00 ft / 1.83 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 35.00 ft / 10.67 m
- Forecastle (20 %): 30.00 ft / 9.14 m (29.00 ft / 8.84 m aft of break)
- Mid (50 %): 28.00 ft / 8.53 m (22.00 ft / 6.71 m aft of break)
- Quarterdeck (18 %): 22.00 ft / 6.71 m (24.00 ft / 7.32 m before break)
- Stern: 24.00 ft / 7.32 m
- Average freeboard: 26.45 ft / 8.06 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 168.1 %
- Above water (accommodation/working, high = better): 165.8 %
Waterplane Area: 18,462 Square feet or 1,715 Square metres
Displacement factor (Displacement / loading): 98 %
Structure weight / hull surface area: 56 lbs/sq ft or 274 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.49
- Longitudinal: 2.50
- Overall: 0.57
Caution: Hull subject to strain in open-sea
Hull space for machinery, storage, compartmentation is cramped
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Excellent seaboat, comfortable, can fire her guns in the heaviest weather

[SrGopher]

Why such a high freeboard? I mean, it has kind of a bulky look for a scout cruiser.

[Clonecommander6454]

High freeboard is not exactly a bad idea for scout cruisers. They look kind of a shrunk version of the early USN Treaty CA's.

[Carthaginian]

High Freeboard = Excellent Seaboat
Basically, the ship will handle better at higher speeds in heavier weather. It will be able to continue steaming at speed in conditions that will force other vessels to slow and go into 'survival mode.' This isn't a bad things for a scout cruiser- it's a good thing.
The big problem with this ship is this... the speed and armament might actually be too much for the hull, as the combination of engineering spaces and magazines will not fit within the belt- contrary to the illustration. Zephyr, what is the length that Springsharp states is necessary to cover the mags and engine spaces? If that length is longer than the percentage of the hull which is between the end of the fo'c'sle and the beginning of the quarterdeck, then the ship can't be illustrated as you have drawn her. You could possibly move the bow turrets forward a bit by shortening the fo'c'sle to 15% or so, but its possible that you might not have the length necessary to fit everything there.

If the engine slider worked, we might be able to better sim ships with destroyer-type machinery... hopefully Ian is at work on the program again.

[Zephyr]

High Freeboard = Excellent Seaboat
Basically, the ship will handle better at higher speeds in heavier weather. It will be able to continue steaming at speed in conditions that will force other vessels to slow and go into 'survival mode.' This isn't a bad things for a scout cruiser- it's a good thing.
The big problem with this ship is this... the speed and armament might actually be too much for the hull, as the combination of engineering spaces and magazines will not fit within the belt- contrary to the illustration. Zephyr, what is the length that Springsharp states is necessary to cover the mags and engine spaces? If that length is longer than the percentage of the hull which is between the end of the fo'c'sle and the beginning of the quarterdeck, then the ship can't be illustrated as you have drawn her. You could possibly move the bow turrets forward a bit by shortening the fo'c'sle to 15% or so, but its possible that you might not have the length necessary to fit everything there.

If the engine slider worked, we might be able to better sim ships with destroyer-type machinery... hopefully Ian is at work on the program again.

There is the possibility I may have made a couple mathmatical errors. I'll check. Thats why I was a history major and not a math major.

[Zephyr]

Something I was playing with, not even sure if it is possible. Half-sisters to the Kittings Class, and inspired, I guess you could say, by the Dutch Admiralen class, except in this case I removed the aft guns and deckhouse and replaced it with a single catapult. I couldn't figure out a way to fit a hanger on there, so I figured one floatplane, covered by a tarp when not in use. Inelegant solution, I know, and most likely needs considerable tweaking (or a paper shredder). I could definately use some input and thoughts on this, please. (no guffaws or facepalms though. )