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Re: Grays Harbor Designs
Posted: May 23rd, 2012, 9:05 am
by Zephyr
acelanceloet wrote:Zephyr wrote:Please, if you have ideas, great, thats what we're here for, but how about putting them all down at once in stead of piecemeal? Thats what becomes frustrating for me, I make changes, move things around, get what I believe is a good design, and along comes a whole new set of changes. Maybe I'm just tired. *shrug*
I follow Erik on this one. on my shipbuilding ed, we work in spirals with the project. you start on the outside, make estimates, and go to the next step. you keep doing that until you are back on the first step, but now closer to the center, and revise your original assumptions. then you do this again for every step. and in the end, you see your ship is too heavy or not stable, and you have to go 3 circles back! everything follows on the previous, even the things you do first. and those are simple merchants most of the times, don't even think anything can be simple on an naval vessel
that is the main reason no vessel is ever the same. every problem has about 3 or more solutions, but every solution has it's own problem.
and thats supposed to make me feel better??
ok, I jest.
Yeah, I know that, but it does get a bit frustrating anyhow as I do, on occassion, feel like I'm trying to run a hundred meter dash towing an anchor.
Ah well, back to the drawing keyboard.
And just a reminder... still
trying to get these Carsden Class DG's finished up...... *whistles innocently*
Re: Grays Harbor Designs
Posted: May 23rd, 2012, 10:38 am
by Thiel
A minor nit on the Blakely, try changing the dividing line between the hull and the superstructure to dark blue.
Re: Grays Harbor Designs
Posted: May 23rd, 2012, 2:34 pm
by Zephyr
I tried that already. Any darker and it becomes near-black, and kooks like any other black line on there, not as a line showing that the hull and superstructure are a single piece. Thats why I went with a dk grey instead.
Re: Grays Harbor Designs
Posted: May 30th, 2012, 7:10 am
by Zephyr
Thought I might try something different again, this time a Colonial Sloop. This class was used for diplomatic business between the Kingdom and the Colonies, and for foreign visits. As they had at least some armament, they were RN and and not RFA vessels, although other than the crew they were used primarily by the Foreign Ministry.
Castle Class, Grays Harbor Colonial Sloop
Displacement:
1,686 t light; 1,738 t standard; 2,389 t normal; 2,909 t full load
Dimensions: Length overall / water x beam x draught
343.61 ft / 326.00 ft x 40.00 ft x 14.00 ft (normal load)
104.73 m / 99.36 m x 12.19 m x 4.27 m
Armament:
2 - 4.7" / 119 mm guns in single mounts, 51.91lbs / 23.55kg shells, 1925 Model
Quick firing guns in deck mounts
on centreline ends, evenly spread
Weight of broadside 104 lbs / 47 kg
Shells per gun, main battery: 75
Machinery:
Oil fired boilers, steam turbines,
Geared drive, 2 shafts, 14,038 shp / 10,473 Kw = 24.00 kts
Range 7,400nm at 18.00 kts
Bunker at max displacement = 1,171 tons
Complement:
170 - 222
Cost:
£0.541 million / $2.166 million
Distribution of weights at normal displacement:
Armament: 13 tons, 0.5 %
Machinery: 425 tons, 17.8 %
Hull, fittings & equipment: 1,248 tons, 52.2 %
Fuel, ammunition & stores: 703 tons, 29.4 %
Miscellaneous weights: 0 tons, 0.0 %
Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
5,043 lbs / 2,287 Kg = 97.1 x 4.7 " / 119 mm shells or 1.5 torpedoes
Stability (Unstable if below 1.00): 1.37
Metacentric height 2.2 ft / 0.7 m
Roll period: 11.3 seconds
Steadiness - As gun platform (Average = 50 %): 61 %
- Recoil effect (Restricted arc if above 1.00): 0.04
Seaboat quality (Average = 1.00): 1.22
Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.458
Length to Beam Ratio: 8.15 : 1
'Natural speed' for length: 18.06 kts
Power going to wave formation at top speed: 57 %
Trim (Max stability = 0, Max steadiness = 100): 50
Bow angle (Positive = bow angles forward): 10.00 degrees
Stern overhang: 14.00 ft / 4.27 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 20.50 ft / 6.25 m
- Forecastle (19 %): 18.00 ft / 5.49 m
- Mid (41 %): 18.00 ft / 5.49 m (10.00 ft / 3.05 m aft of break)
- Quarterdeck (14 %): 10.00 ft / 3.05 m
- Stern: 11.00 ft / 3.35 m
- Average freeboard: 13.54 ft / 4.13 m
Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 62.9 %
- Above water (accommodation/working, high = better): 118.5 %
Waterplane Area: 8,373 Square feet or 778 Square metres
Displacement factor (Displacement / loading): 250 %
Structure weight / hull surface area: 90 lbs/sq ft or 439 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 1.53
- Longitudinal: 3.22
- Overall: 1.65
Hull space for machinery, storage, compartmentation is excellent
Room for accommodation and workspaces is adequate
Good seaboat, rides out heavy weather easily
Re: Grays Harbor Designs
Posted: May 30th, 2012, 9:35 am
by Thiel
I realize this is my heritage speaking, but I can't help but wanting to fit minerails on her.
Those long covered side decks are literally begging for them.
Also, since your most likely target are unruly natives you might consider 6in pedestal mounts.
Re: Grays Harbor Designs
Posted: May 30th, 2012, 9:41 am
by Rodondo
Thiel wrote:
Those long covered side decks are literally begging for them.
I imagine its a matter of passageway width though
Re: Grays Harbor Designs
Posted: May 30th, 2012, 10:41 am
by Zephyr
Thiel wrote:I realize this is my heritage speaking, but I can't help but wanting to fit minerails on her.
Those long covered side decks are literally begging for them.
Also, since your most likely target are unruly natives you might consider 6in pedestal mounts.
It is likely that minerails would have been fitted during the 3rd Prussian War of 1940-44, at least on some of them. I had also thought about 6" instead of the 4.7's, but they seemed a bit outsized for this class when I tried them.
Re: Grays Harbor Designs
Posted: May 30th, 2012, 9:30 pm
by Trojan
I like it a lot
ever thought about doing a design similar to or based off of Erie class
Re: Grays Harbor Designs
Posted: May 30th, 2012, 9:59 pm
by Zephyr
Trojan wrote:I like it a lot
ever thought about doing an Erie class design
My
Lilith class scout cruiser is kinda loosely based on the Erie
Re: Grays Harbor Designs
Posted: May 31st, 2012, 5:34 pm
by Portsmouth Bill
I don't usually commnet here, but I always look in; so I'd like to say that your skills are developing and that is most evident in the latest design
