Grays Harbor Designs

[Zephyr]

I just realized something. In the current set-up your directors can't turn 90 degrees which is a bit of a problem when firing broadsides.

I think you may be looking at the lower image. The upper image is the current one.

[Zephyr]

"King of the Gods" from differing pantheons was chosen

Ah, that makes sense. Although I thought Osiris was a god of the dead but I'm not gonna argue. It's your AU after all.

Quite possible. I'm not that familiar with the Egyptian pantheon as I am with the Greek, Roman and Norse.

[Thiel]

I just realized something. In the current set-up your directors can't turn 90 degrees which is a bit of a problem when firing broadsides.

I think you may be looking at the lower image. The upper image is the current one.

Nope. I'm referring to the aft DCT. As far as I've been able to gather it featured a 15ft range finder. Even with it's slimmer profile, the HACS will still get in the way. You'll need at least 7px clearance around the DCT and 5px around the HACS which has a 12ft range finder.
I'd move the aft mast and HACS forward a bit and move the armoured conning tower back a few pixels.

[Zephyr]

I just realized something. In the current set-up your directors can't turn 90 degrees which is a bit of a problem when firing broadsides.

I think you may be looking at the lower image. The upper image is the current one.

Nope. I'm referring to the aft DCT. As far as I've been able to gather it featured a 15ft range finder. Even with it's slimmer profile, the HACS will still get in the way. You'll need at least 7px clearance around the DCT and 5px around the HACS which has a 12ft range finder.
I'd move the aft mast and HACS forward a bit and move the armoured conning tower back a few pixels.

ah. yeah. I just checked. I uploaded the wrong image. I did my WIP instead of the one with all the changes. Thats also the one with the corrected bilge keel. I thought I had changed the directors on both, but I guess I was wrong, huh? Thats what I get for not paying attention.



So, I believe this one is now finished.

[Zephyr]

Played around with springsharp for the first time, entered data from the Colonies Class group 3 AA variant and this is what I came up with.

Grayson Islands, Grays Harbor Light Cruiser laid down 1940

Displacement:
9,172 t light; 9,600 t standard; 10,636 t normal; 11,464 t full load

Dimensions: Length overall / water x beam x draught
605.38 ft / 596.50 ft x 66.00 ft x 23.00 ft (normal load)
184.52 m / 181.81 m x 20.12 m x 7.01 m

Armament:
20 - 5.25" / 133 mm guns (6 mounts), 72.35lbs / 32.82kg shells, 1940 Model
Dual purpose guns in turrets (on barbettes)
on centreline ends, evenly spread
28 - 1.57" / 40.0 mm guns (4x7 guns), 1.95lbs / 0.89kg shells, 1940 Model
Anti-aircraft guns in turrets (on barbettes)
on side ends, evenly spread
28 - 0.79" / 20.0 mm guns (7x4 guns), 0.24lbs / 0.11kg shells, 1940 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
Weight of broadside 1,509 lbs / 684 kg
Shells per gun, main battery: 250

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 4.00" / 102 mm 206.00 ft / 62.79 m 9.50 ft / 2.90 m
Ends: 1.50" / 38 mm 287.00 ft / 87.48 m 8.00 ft / 2.44 m
103.50 ft / 31.55 m Unarmoured ends
Upper: 1.50" / 38 mm 300.00 ft / 91.44 m 0.00 ft / 0.00 m
Main Belt covers 53 % of normal length
Main belt does not fully cover magazines and engineering spaces

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.50" / 38 mm 1.50" / 38 mm 2.00" / 51 mm
2nd: 1.50" / 38 mm 1.50" / 38 mm 2.00" / 51 mm

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 108,360 shp / 80,837 Kw = 34.00 kts
Range 8,500nm at 15.00 kts
Bunker at max displacement = 1,864 tons

Complement:
523 - 680

Cost:
£5.310 million / $21.241 million

Distribution of weights at normal displacement:
Armament: 189 tons, 1.8 %
Armour: 770 tons, 7.2 %
- Belts: 500 tons, 4.7 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 270 tons, 2.5 %
- Armour Deck: 0 tons, 0.0 %
- Conning Tower: 0 tons, 0.0 %
Machinery: 2,897 tons, 27.2 %
Hull, fittings & equipment: 5,316 tons, 50.0 %
Fuel, ammunition & stores: 1,464 tons, 13.8 %
Miscellaneous weights: 0 tons, 0.0 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
10,655 lbs / 4,833 Kg = 147.3 x 5.3 " / 133 mm shells or 1.6 torpedoes
Stability (Unstable if below 1.00): 1.10
Metacentric height 3.2 ft / 1.0 m
Roll period: 15.5 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0.25
Seaboat quality (Average = 1.00): 0.94

Hull form characteristics:
Hull has raised forecastle
Block coefficient: 0.411
Length to Beam Ratio: 9.04 : 1
'Natural speed' for length: 24.42 kts
Power going to wave formation at top speed: 57 %
Trim (Max stability = 0, Max steadiness = 100): 76
Bow angle (Positive = bow angles forward): 12.00 degrees
Stern overhang: 2.50 ft / 0.76 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 30.00 ft / 9.14 m
- Forecastle (33 %): 17.00 ft / 5.18 m (16.50 ft / 5.03 m aft of break)
- Mid (50 %): 15.50 ft / 4.72 m
- Quarterdeck (34 %): 16.00 ft / 4.88 m
- Stern: 17.50 ft / 5.33 m
- Average freeboard: 18.25 ft / 5.56 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 103.3 %
- Above water (accommodation/working, high = better): 141.1 %
Waterplane Area: 24,398 Square feet or 2,267 Square metres
Displacement factor (Displacement / loading): 132 %
Structure weight / hull surface area: 139 lbs/sq ft or 679 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.30
- Longitudinal: 1.81
- Overall: 1.34
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent
Ship has slow, easy roll, a good, steady gun platform
Poor seaboat, wet and uncomfortable, reduced performance in heavy weather

[Zephyr]

Thought I might try a DD this time around.


Length: 379'
Beam: 39'
Draught: 16"
Propulsion: 4 boilers, 2 Geared Steam Turbines, 2 shafts
Speed: 36 knots
Range: 5,200 NM @ 15 knots
Complement: 175
Armament:
8 x 4.7" (4 x 2)
3 x 2 pdr (3 x 1)
12 x torpedo tubes (3 x 4)
2 x DC rails
2 x DCT

Ships in Class
-------------
Brentwood
Tigriss
Cripinston
Camelin
Harkness
Beldine
Sander
Norriston

[eltf177]

The "Grayson Islands"-class has a number of problems, most notably lack of deck armor. I took a stab at redoing the design...

******************

Grayson Islands, Gray's Harbor Light AA Cruiser laid down 1940

Displacement:
9,020 t light; 9,649 t standard; 10,693 t normal; 11,528 t full load

Dimensions: Length overall / water x beam x draught
605.38 ft / 596.50 ft x 66.00 ft x 24.50 ft (normal load)
184.52 m / 181.81 m x 20.12 m x 7.47 m

Armament:
12 - 5.25" / 133 mm guns (6x2 guns), 72.35lbs / 32.82kg shells, 1940 Model
Dual purpose guns in turrets (on barbettes)
on centreline ends, evenly spread, all raised mounts - superfiring
8 - 5.25" / 133 mm guns (4x2 guns), 72.35lbs / 32.82kg shells, 1940 Model
Dual purpose guns in turrets (on barbettes)
on side, evenly spread
28 - 1.57" / 40.0 mm guns (8 mounts), 1.95lbs / 0.88kg shells, 1940 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, 20 raised guns
28 - 0.79" / 20.0 mm guns (7x4 guns), 0.24lbs / 0.11kg shells, 1940 Model
Anti-aircraft guns in deck mounts
on side, evenly spread, 5 raised mounts
Weight of broadside 1,508 lbs / 684 kg
Shells per gun, main battery: 450

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 4.00" / 102 mm 410.00 ft / 124.97 m 9.50 ft / 2.90 m
Ends: 1.50" / 38 mm 150.00 ft / 45.72 m 9.50 ft / 2.90 m
36.50 ft / 11.13 m Unarmoured ends
Upper: 1.50" / 38 mm 410.00 ft / 124.97 m 6.00 ft / 1.83 m
Main Belt covers 106 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 1.50" / 38 mm 1.50" / 38 mm 2.00" / 51 mm
2nd: 1.50" / 38 mm 1.50" / 38 mm 2.00" / 51 mm
3rd: 1.00" / 25 mm - -
4th: 1.00" / 25 mm - -

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

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 4 shafts, 95,322 shp / 71,110 Kw = 33.00 kts
Range 8,500nm at 15.00 kts
Bunker at max displacement = 1,879 tons

Complement:
525 - 683

Cost:
£4.985 million / $19.942 million

Distribution of weights at normal displacement:
Armament: 189 tons, 1.8 %
Armour: 2,096 tons, 19.6 %
- Belts: 874 tons, 8.2 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 289 tons, 2.7 %
- Armour Deck: 891 tons, 8.3 %
- Conning Tower: 42 tons, 0.4 %
Machinery: 2,549 tons, 23.8 %
Hull, fittings & equipment: 4,061 tons, 38.0 %
Fuel, ammunition & stores: 1,673 tons, 15.6 %
Miscellaneous weights: 125 tons, 1.2 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
12,480 lbs / 5,661 Kg = 172.5 x 5.3 " / 133 mm shells or 1.7 torpedoes
Stability (Unstable if below 1.00): 1.23
Metacentric height 3.9 ft / 1.2 m
Roll period: 14.0 seconds
Steadiness - As gun platform (Average = 50 %): 52 %
- Recoil effect (Restricted arc if above 1.00): 0.23
Seaboat quality (Average = 1.00): 1.00

Hull form characteristics:
Hull has raised forecastle
Block coefficient: 0.388
Length to Beam Ratio: 9.04 : 1
'Natural speed' for length: 24.42 kts
Power going to wave formation at top speed: 55 %
Trim (Max stability = 0, Max steadiness = 100): 52
Bow angle (Positive = bow angles forward): 12.00 degrees
Stern overhang: 2.50 ft / 0.76 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 30.00 ft / 9.14 m
- Forecastle (20 %): 17.00 ft / 5.18 m (16.50 ft / 5.03 m aft of break)
- Mid (50 %): 15.50 ft / 4.72 m
- Quarterdeck (15 %): 15.50 ft / 4.72 m
- Stern: 15.50 ft / 4.72 m
- Average freeboard: 16.99 ft / 5.18 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 95.6 %
- Above water (accommodation/working, high = better): 137.5 %
Waterplane Area: 24,084 Square feet or 2,238 Square metres
Displacement factor (Displacement / loading): 121 %
Structure weight / hull surface area: 108 lbs/sq ft or 526 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.97
- Longitudinal: 1.37
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is excellent

Main Battery in an "Atlanta"-type layout but with 4 beam turrets instead of 2 (16-gun broadside). The 40mm cannons are in 6 quad and 2 twin mounts. Made the following changes:

- Did some adjustment to freeboard (original numbers were a bit off)
- Heightened end belt to match main belt
- Gave some height to upper belt (original was 0'!)
- Lengthened main belt (shortening end belt in the process) to fix that problem
- Added CT and deck armor (original had _none_!)
- Dropped speed from 34 knots to 33
- Separated the Main Battery into 2 sets, now 10 turrets instead of 6. Raised 6 turrets (to reflect 2 raised and 2 double raised centerline turrets, beam turrets are not raised).
- Increased rounds for the Main Battery from 250 rpg to 450 rpg (necessary for an AA ship that's going to burn ammo fast)
- Added miscellaneous weight
- Changed the 40mm cannons from 7 quad mounts to 6 quad and 2 twin mounts, raised 4 quad and both twin mounts
- Raised 5 of the 7 quad 20mm mounts
- Put 1-inch shields on 40mm and 20mm mounts
- Added 1.5' of draft to fix seakeeping problem

Displacement increased by 61 tons, lost the "steady gun platform" rating but lost the "poor seaboat" raiting as well.

[Zephyr]

Yeah, I forgot to include the deck armor. Increasing the rounds from 250 to 450, not a bad idea. I'll not be changing the secondaries though, that stays as is, (I really don't want to have to redraw the whole thing again). I appreciate what you did though. Thanks.

[Zephyr]

And another destroyer, the Richardson class from 1929.


Length: 330'
Beam: 34'
Draught: 12"
Propulsion: 4 boilers, 2 Geared Steam Turbines, 2 shafts
Speed: 36 knots
Range: 4,800 NM @ 15 knots
Complement: 145
Armament:
4 x 4" (4 x 1)
1 x 3" HA
2 x 2 pdr (2 x 1)
8 x torpedo tubes (4 x 2)
2 x DC rails
2 x DCT

Ships in Class
---------------
Richardson
Padan
Waynesfield
Kitsap City
Moreanus
Warner
Paxton
Springfield

[eltf177]

Yeah, I forgot to include the deck armor. Increasing the rounds from 250 to 450, not a bad idea. I'll not be changing the secondaries though, that stays as is, (I really don't want to have to redraw the whole thing again). I appreciate what you did though. Thanks.

No problem. It's a good design, just needed some tweaks and armor. I have a personal problem with short belts not protecting everything, larger ships being poor seaboats and main batteries incapable of end-on fire; I'll do a lot of work to fix those problems.