WesWorld

I can't remember who got this thought running around my head, whover it was ....thanks!

Well, does she sink or swim?
She is a rebuild of the D1 class destroyer ( in the encyclopedia section)

SD 1, Denmark Sloop (Former Destroyer) laid down 1908 (Engine 192

Displacement:
1,133 t light; 1,179 t standard; 1,370 t normal; 1,523 t full load

Dimensions: Length overall / water x beam x draught
280.39 ft / 270.00 ft x 30.00 ft x 12.00 ft (normal load)
85.46 m / 82.30 m x 9.14 m x 3.66 m

Armament:
4 - 5.12" / 130 mm guns in single mounts, 67.03lbs / 30.40kg shells, 1927 Model
Quick firing guns in deck mounts with hoists
on centreline ends, evenly spread, 2 raised mounts - superfiring
8 - 2.24" / 57.0 mm guns (4x2 guns), 5.65lbs / 2.56kg shells, 1926 Model
Dual purpose guns in deck mounts
on side, all amidships, all raised mounts - superfiring
8 - 0.79" / 20.0 mm guns (4x2 guns), 0.24lbs / 0.11kg shells, 1925 Model
Anti-aircraft guns in deck mounts
on side, evenly spread
Weight of broadside 315 lbs / 143 kg
Shells per gun, main battery: 100

Armour:
- Belts: Width (max) Length (avg) Height (avg)
Main: 0.75" / 19 mm 190.29 ft / 58.00 m 6.56 ft / 2.00 m
Ends: Unarmoured
Upper: 0.50" / 13 mm 104.99 ft / 32.00 m 6.56 ft / 2.00 m
Main Belt covers 108 % of normal length

- Gun armour: Face (max) Other gunhouse (avg) Barbette/hoist (max)
Main: 0.98" / 25 mm - -
2nd: 0.59" / 15 mm - -
3rd: 0.59" / 15 mm - -

- Armour deck: 0.50" / 13 mm, Conning tower: 0.98" / 25 mm

Machinery:
Oil fired boilers, steam turbines,
Direct drive, 2 shafts, 10,879 shp / 8,116 Kw = 24.00 kts
Range 8,000nm at 12.00 kts
Bunker at max displacement = 343 tons

Complement:
112 - 146

Cost:
£0.120 million / $0.481 million

Distribution of weights at normal displacement:
Armament: 39 tons, 2.9 %
Armour: 123 tons, 9.0 %
- Belts: 55 tons, 4.0 %
- Torpedo bulkhead: 0 tons, 0.0 %
- Armament: 16 tons, 1.2 %
- Armour Deck: 50 tons, 3.6 %
- Conning Tower: 3 tons, 0.2 %
Machinery: 339 tons, 24.7 %
Hull, fittings & equipment: 557 tons, 40.6 %
Fuel, ammunition & stores: 237 tons, 17.3 %
Miscellaneous weights: 75 tons, 5.5 %

Overall survivability and seakeeping ability:
Survivability (Non-critical penetrating hits needed to sink ship):
1,400 lbs / 635 Kg = 20.9 x 5.1 " / 130 mm shells or 0.6 torpedoes
Stability (Unstable if below 1.00): 1.01
Metacentric height 0.8 ft / 0.3 m
Roll period: 13.7 seconds
Steadiness - As gun platform (Average = 50 %): 71 %
- Recoil effect (Restricted arc if above 1.00): 0.98
Seaboat quality (Average = 1.00): 1.20

Hull form characteristics:
Hull has rise forward of midbreak
Block coefficient: 0.493
Length to Beam Ratio: 9.00 : 1
'Natural speed' for length: 16.43 kts
Power going to wave formation at top speed: 62 %
Trim (Max stability = 0, Max steadiness = 100): 59
Bow angle (Positive = bow angles forward): 25.00 degrees
Stern overhang: 2.00 ft / 0.61 m
Freeboard (% = measuring location as a percentage of overall length):
- Stem: 18.00 ft / 5.49 m
- Forecastle (20 %): 16.00 ft / 4.88 m
- Mid (55 %): 16.00 ft / 4.88 m (8.00 ft / 2.44 m aft of break)
- Quarterdeck (15 %): 8.00 ft / 2.44 m
- Stern: 8.00 ft / 2.44 m
- Average freeboard: 12.56 ft / 3.83 m
Ship tends to be wet forward

Ship space, strength and comments:
Space - Hull below water (magazines/engines, low = better): 107.9 %
- Above water (accommodation/working, high = better): 112.3 %
Waterplane Area: 5,364 Square feet or 498 Square metres
Displacement factor (Displacement / loading): 115 %
Structure weight / hull surface area: 53 lbs/sq ft or 260 Kg/sq metre
Hull strength (Relative):
- Cross-sectional: 0.87
- Longitudinal: 3.33
- Overall: 1.00
Hull space for machinery, storage, compartmentation is adequate
Room for accommodation and workspaces is adequate
Ship has slow, easy roll, a good, steady gun platform

ASW Weaponry = 60 depth charges - 2 rails and 4 launchers

P.S. would she benefit from the .50 hull strenght rule, or is she too slow?

I think the minimum speed for the 0.5 hull strength is 27 knots.

I think she's a little short ranged for convoy escort operations in the Pacific.

The limit for hull strength below 1.00 is 24.01 knots...

I think you were inspired by Rocky's DD-to-SL conversions. ;-)

I would call 4x130mm overkill for a sloop, but otherwise she looks good to me.

I see her principally as a convoy escort vessel, so I see the guns as helping to deter all but the most determined attacker (at one stage I was toying with the idea of 6 guns!!)

. I'll see what i can do about the range.

Thanks Rocky!
You may have given the older girls in the fleet a new lease on life!

Quoted

The limit for hull strength below 1.00 is 24.01 knots...

It is >24 knots so 24.0000000001 knots would be correct as well, but in SS it would give you 24.00 rounded down so for something visible over 24 knots, it should be 24.01 like Swamphen said.

Deck space would be a problem. Go to twin mounts for the 130mm guns. Loose the armour and carry more shells.

... makes me wonder why those older Danish DDs (No's 1 thru 12) are armored in the first place...

Or why they have 4", 4.5", 120mm, 4.75" and 130mm guns?

Probably one reason why this sloop conversion changes main guns from 4 inch to 130mm, thus attempting to retire the 4 inch gun. That means Denmark would be left with 4.5", 120mm, 4.75" and 130mm (but still a few too many types of calibers).

Quoted

Thanks Rocky!

Always trying to help a sometimes-rival in need.

I'd second RA's comments. Deck space will be a definite issue for you.

As an aside, you're not constrained by the treaty. Why not leave a torpedo carriage aboard?

It's a pretty big destroyer for 1908, but whatcha gonna do...

"Ahh, the ignorance of youth, back in the day when I hadn't a clue!!!!"
She is kind of provisional at the moment, until I do out a drawing to see hoe everything sits....

As for the Torps, with The King's wish to eventually sign the treaty, it wouldn't make much sense, and I see her operating in convoys with a DD as convoy leader, which will have torps.

Why not build a wooden superstructure over it to hide it?