1st attempt to use Springsharp

Beginner

Thursday, September 17th 2009, 3:11pm

Greetings all,

I have been lurking for a while so i decided i would jump off the deep end and say Hi. This is my 1st attempt to use Springsharp after being inspired by many of the ships that have been designed here.

I'm a little unsure if this fit's in with your requirements here as I could not find the thread listing what is and is not allowed. It's loosely based upon the Hunt Series 3 Hull with the arrangement of the main guns in a Battle Class type arrangement. The idea is to have quite a large quarterdeck area to mount the DC's and Torpedo tubes with the 2 rear 40mm raised a deck and super firing to allow better engagement arcs.

I knocked up a little sketch using the ship drawing tool on here but i dont seem to be able to save it, what is the best method for kitbashing pictures for your springsharp mods.

Critiques are welcome now be gentle with me, it's my 1st time

Quoted

HMS Castlerock, British Escort Sloop laid down 1940

Displacement:
1,004 t light; 1,104 t standard; 1,231 t normal; 1,332 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(289.28 ft / 282.00 ft) x 33.00 ft x (11.60 / 12.21 ft)
(88.17 m / 85.95 m) x 10.06 m x (3.54 / 3.72 m)

Armament:
4 - 4.00" / 102 mm 50.0 cal guns - 33.88lbs / 15.37kg shells, 200 per gun
Dual purpose guns in deck and hoist mounts, 1940 Model
2 x 2 row twin mounts on centreline, forward evenly spread
1 raised mount
8 - 1.57" / 40.0 mm 45.0 cal guns - 1.97lbs / 0.89kg shells, 5,000 per gun
Anti-air guns in deck mounts, 1940 Model
1 x Quad mount on centreline, aft deck aft
1 raised mount
1 x Quad mount on centreline, aft deck centre
1 double raised mount
12 - 0.79" / 20.0 mm 45.0 cal guns - 0.25lbs / 0.11kg shells, 10,000 per gun
Anti-air guns in deck mounts, 1940 Model
2 x 2 row twin mounts on sides, forward deck centre
2 raised mounts
4 x 2 row twin mounts on sides, forward deck aft
2 raised mounts - superfiring
Weight of broadside 154 lbs / 70 kg
Main Torpedoes
4 - 21.0" / 533 mm, 21.70 ft / 6.61 m torpedoes - 1.483 t each, 5.934 t total
In 1 sets of deck mounted centre rotating tubes
Main DC/AS Mortars
60 - 420.00 lbs / 190.51 kg Depth Charges - 11.250 t total
in Stern depth charge racks
2nd DC/AS Mortars
60 - 420.00 lbs / 190.51 kg Depth Charges - 11.250 t total
in Depth charge throwers

Armour:
- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.50" / 13 mm - -

Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 21,799 shp / 16,262 Kw = 30.03 kts
Range 6,000nm at 12.00 kts
Bunker at max displacement = 229 tons

Complement:
103 - 135

Cost:
£0.756 million / $3.022 million

Distribution of weights at normal displacement:
Armament: 91 tons, 7.4 %
- Guns: 49 tons, 3.9 %
- Weapons: 43 tons, 3.5 %
Armour: 2 tons, 0.2 %
- Armament: 2 tons, 0.2 %
Machinery: 535 tons, 43.4 %
Hull, fittings & equipment: 315 tons, 25.6 %
Fuel, ammunition & stores: 227 tons, 18.4 %
Miscellaneous weights: 60 tons, 4.9 %
- Hull below water: 20 tons
- On freeboard deck: 20 tons
- Above deck: 20 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
425 lbs / 193 Kg = 13.3 x 4.0 " / 102 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.26
Metacentric height 1.4 ft / 0.4 m
Roll period: 11.6 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0.42
Seaboat quality (Average = 1.00): 1.22

Hull form characteristics:
Hull has rise forward of midbreak,
a normal bow and small transom stern
Block coefficient (normal/deep): 0.399 / 0.410
Length to Beam Ratio: 8.55 : 1
'Natural speed' for length: 18.30 kts
Power going to wave formation at top speed: 69 %
Trim (Max stability = 0, Max steadiness = 100): 58
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 0.00 ft / 0.00 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 20.00 ft / 6.10 m, 20.00 ft / 6.10 m
- Forward deck: 35.00 %, 20.00 ft / 6.10 m, 20.00 ft / 6.10 m
- Aft deck: 30.00 %, 10.00 ft / 3.05 m, 10.00 ft / 3.05 m
- Quarter deck: 15.00 %, 10.00 ft / 3.05 m, 10.00 ft / 3.05 m
- Average freeboard: 15.50 ft / 4.72 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 159.5 %
- Above water (accommodation/working, high = better): 144.7 %
Waterplane Area: 5,855 Square feet or 544 Square metres
Displacement factor (Displacement / loading): 89 %
Structure weight / hull surface area: 28 lbs/sq ft or 137 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.41
- Longitudinal: 3.19
- Overall: 0.51
Cramped machinery, storage, compartmentation space
Excellent accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform
Good seaboat, rides out heavy weather easily

DC's based on the RN Mk VII Heavy
Miscellaneous weights added to allow for growth of crew, wepons and the fitting of radar
Torpedoes based on RN 21" MkVIII

This post has been edited 2 times, last edit by "Brazen" (Sep 17th 2009, 3:18pm)

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Brockpaine

The Shadow

Posts: 15,109

2

Thursday, September 17th 2009, 3:48pm

Hey! Welcome.

Overall, your design doesn't look too bad, with one minor exception. To be "WW Legal", the design has to have a minimum .5 Cross-sectional hull strength. Other than that, looks quite workable.

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Brazen

Beginner

Posts: 5

3

Thursday, September 17th 2009, 3:51pm

Ok found the Construction rules, the cross sectional strength has been increased in accordance with the Wesworld rules.

HMS Castlerock, British Escort Sloop laid down 1940

Displacement:
1,144 t light; 1,236 t standard; 1,372 t normal; 1,480 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
(297.28 ft / 285.00 ft) x 33.00 ft x (11.60 / 12.22 ft)
(90.61 m / 86.87 m) x 10.06 m x (3.54 / 3.73 m)

Armament:
4 - 4.00" / 102 mm 50.0 cal guns - 33.88lbs / 15.37kg shells, 200 per gun
Dual purpose guns in deck and hoist mounts, 1940 Model
2 x 2 row twin mounts on centreline, forward evenly spread
1 raised mount
8 - 1.57" / 40.0 mm 45.0 cal guns - 1.97lbs / 0.89kg shells, 5,000 per gun
Anti-air guns in deck mounts, 1940 Model
1 x Quad mount on centreline, aft deck aft
1 raised mount
1 x Quad mount on centreline, aft deck centre
1 double raised mount
4 - 0.79" / 20.0 mm 45.0 cal guns - 0.25lbs / 0.11kg shells, 10,000 per gun
Anti-air guns in deck mounts, 1940 Model
4 x Single mounts on sides, evenly spread
2 raised mounts
Weight of broadside 152 lbs / 69 kg
Main Torpedoes
4 - 21.0" / 533 mm, 21.90 ft / 6.68 m torpedoes - 1.495 t each, 5.981 t total
In 1 sets of deck mounted centre rotating tubes
Main DC/AS Mortars
60 - 420.00 lbs / 190.51 kg Depth Charges - 11.250 t total
in Stern depth charge racks
2nd DC/AS Mortars
60 - 420.00 lbs / 190.51 kg Depth Charges - 11.250 t total
in Depth charge throwers

Machinery:
Diesel Internal combustion motors,
Geared drive, 2 shafts, 23,934 shp / 17,855 Kw = 30.03 kts
Range 6,000nm at 12.00 kts
Bunker at max displacement = 244 tons

Complement:
112 - 146

Cost:
£0.841 million / $3.363 million

Distribution of weights at normal displacement:
Armament: 91 tons, 6.6 %
- Guns: 48 tons, 3.5 %
- Weapons: 43 tons, 3.1 %
Machinery: 603 tons, 44.0 %
Hull, fittings & equipment: 391 tons, 28.5 %
Fuel, ammunition & stores: 227 tons, 16.6 %
Miscellaneous weights: 60 tons, 4.4 %
- Hull below water: 20 tons
- On freeboard deck: 20 tons
- Above deck: 20 tons

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
524 lbs / 238 Kg = 16.4 x 4.0 " / 102 mm shells or 0.3 torpedoes
Stability (Unstable if below 1.00): 1.15
Metacentric height 1.2 ft / 0.4 m
Roll period: 12.4 seconds
Steadiness - As gun platform (Average = 50 %): 75 %
- Recoil effect (Restricted arc if above 1.00): 0.45
Seaboat quality (Average = 1.00): 1.11

Hull form characteristics:
Hull has rise forward of midbreak,
a normal bow and small transom stern
Block coefficient (normal/deep): 0.440 / 0.451
Length to Beam Ratio: 8.64 : 1
'Natural speed' for length: 18.32 kts
Power going to wave formation at top speed: 70 %
Trim (Max stability = 0, Max steadiness = 100): 68
Bow angle (Positive = bow angles forward): 20.00 degrees
Stern overhang: 5.00 ft / 1.52 m
Freeboard (% = length of deck as a percentage of waterline length):
Fore end, Aft end
- Forecastle: 20.00 %, 20.00 ft / 6.10 m, 20.00 ft / 6.10 m
- Forward deck: 35.00 %, 20.00 ft / 6.10 m, 20.00 ft / 6.10 m
- Aft deck: 30.00 %, 10.00 ft / 3.05 m, 10.00 ft / 3.05 m
- Quarter deck: 15.00 %, 10.00 ft / 3.05 m, 10.00 ft / 3.05 m
- Average freeboard: 15.50 ft / 4.72 m

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 158.2 %
- Above water (accommodation/working, high = better): 139.0 %
Waterplane Area: 6,089 Square feet or 566 Square metres
Displacement factor (Displacement / loading): 92 %
Structure weight / hull surface area: 33 lbs/sq ft or 162 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.50
- Longitudinal: 3.44
- Overall: 0.60
Cramped machinery, storage, compartmentation space
Excellent accommodation and workspace room
Ship has slow, easy roll, a good, steady gun platform

DC's based on the RN Mk VII Heavy
Miscellaneous weights added to allow for growth of crew, wepons and the fitting of radar
Torpedoes based on RN 21" MkVIII

This post has been edited 1 times, last edit by "Brazen" (Sep 17th 2009, 3:59pm)

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Brockpaine

The Shadow

Posts: 15,109

4

Thursday, September 17th 2009, 3:59pm

That looks about right. Nicely done.

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Brazen

Beginner

Posts: 5

5

Thursday, September 17th 2009, 4:03pm

Thanks, it's quite tricky to use when you don't have a clue what affects cross sectional strength

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Brockpaine

The Shadow

Posts: 15,109

6

Thursday, September 17th 2009, 4:15pm

Quoted

Originally posted by Brazen
Thanks, it's quite tricky to use when you don't have a clue what affects cross sectional strength

In general, everything.

Hull strength is pretty much taking the dimensions and displacement of the hull (displacement comes via a calculation of length x beam x draft to arrive at a volume, modified by the block coefficient). Normal, unloaded hulls of course have a high HS. Start adding guns, engines, armour, etc, and you lower the hull strength. Add more displacement and raise hull strength (though there are associated perils that may occur).

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WesWorld

1st attempt to use Springsharp

1st attempt to use Springsharp

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