A New Destroyer for the Mark in 1910

[Ithekro]

12 to be built in 1910-11.  It is possible that more will be built in 1911-12.

Guthláf-class

Rohan Destroyer laid down 1910 (Engine 1909)

Displacement:
   730 t light; 765 t standard; 875 t normal; 960 t full load

Dimensions: Length overall / water x beam x draught
   270.00 ft / 270.00 ft x 30.00 ft x 8.00 ft (normal load)
   82.30 m / 82.30 m x 9.14 m  x 2.44 m

Armament:
      3 - 4.50" / 114 mm guns in single mounts, 45.56lbs / 20.67kg shells, 1910 Model
     Quick firing guns in deck mounts
     on centreline, evenly spread
     Aft Main mounts separated by engine room
      4 - 0.75" / 19.1 mm guns in single mounts, 0.21lbs / 0.10kg shells, 1910 Model
     Quick firing guns in deck mounts
     on side, evenly spread
   Weight of broadside 138 lbs / 62 kg
   Shells per gun, main battery: 225
   4 - 16.0" / 406.4 mm above water torpedoes

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1.00" / 25 mm         -               -

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 1 shaft, 11,500 shp / 8,579 Kw = 26.05 kts
   Range 2,000nm at 15.00 kts (Bunkerage = 199 tons)

Complement:
   79 - 104

Cost:
   £0.096 million / $0.382 million

Distribution of weights at normal displacement:
   Armament: 17 tons, 2.0 %
   Armour: 7 tons, 0.9 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 7 tons, 0.9 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 397 tons, 45.4 %
   Hull, fittings & equipment: 278 tons, 31.8 %
   Fuel, ammunition & stores: 145 tons, 16.6 %
   Miscellaneous weights: 30 tons, 3.4 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     382 lbs / 173 Kg = 8.4 x 4.5 " / 114 mm shells or 0.3 torpedoes
   Stability (Unstable if below 1.00): 1.40
   Metacentric height 1.5 ft / 0.5 m
   Steadiness   - As gun platform (Average = 50 %): 75 %
         - Recoil effect (Restricted arc if above 1.00): 0.21
   Seaboat quality  (Average = 1.00): 1.50

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.473
   Length to Beam Ratio: 9.00 : 1
   'Natural speed' for length: 16.43 kts
   Power going to wave formation at top speed: 64 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 0.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      18.00 ft / 5.49 m
      - Forecastle (20 %):   14.00 ft / 4.27 m
      - Mid (50 %):      14.00 ft / 4.27 m
      - Quarterdeck (15 %):   14.00 ft / 4.27 m
      - Stern:      14.00 ft / 4.27 m
      - Average freeboard:   14.32 ft / 4.36 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 166.2 %
      - Above water (accommodation/working, high = better): 142.7 %
   Waterplane Area: 5,267 Square feet or 489 Square metres
   Displacement factor (Displacement / loading): 72 %
   Structure weight / hull surface area: 26 lbs/sq ft or 127 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 2.87
      - Overall: 0.60
   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

[Carthaginian]

Slow as DD's are going, but pretty darn powerful.
I know that my 500-tonners would hate to meet one in a dark alley.

Only thing I don't like is the 16" torpedoes.
I'd at least try to get 18" torps on her if the Mark has them.
If not, the CSA volunteers to produce 1000 of our new 20" torps for Rohan at the rate of 250 per half-year so the Mark can mount them on it's new destroyers.

[Ithekro]

I'm not entirely sure what torpedoes
i have that are larger than 16" due to the rule changes of 1906.  I had just finished work on CSA tech to get the ACM 20" torpedoes standardized in the fleet rather than the older Rohirrim 14" and ACM 16" torpedoes or the purchased 18" torpedoes of the ex-CSA protected cruisers.

As for their speed, at least it is better than the older destroyers and faster than anything else in Rohan's fleet.  Stll firepower over speed.

[Borys]

Ahoj!
I'd wager that everbody has 18" (450mm) torpedos ATM. Although this rule change/clarifcation seems to have passed unnoticed.

Torpedo Technologies
1890 Primitive (-2) : 800m@26kts range, 50kg warhead (-1 dam.), compressed air 0.5t, 16" dia.
1890 Dated (-1): 1200@26, 400@35, 100kg warhead (+0 dam.), compressed air 0.5t, 16"
1899 Baseline (0):3000@26, 1500@30, 100kg warhead(+0 dam.), early wet heater 1t, 18"
1905 Advanced (+1): 5000@26, 2200@35, 100kg warhead, imp. wet heater, 1t, 18"
1908 Cutting Edge (+3): 7000@26, 3000@35, 100kg warhead, imp. wet heater, 1t, 21"
1913: (+5) 15000@26, 10000@30,7000@35, 200kg warhead (+1), 2t, 21"
1918: (+8) 20000@26, 15000@30, 10000@35, 300kg warhead (+2) 3t weight, 24"

[Korpen]

Nice to see I am not the only one who prefere torpedo-armed gunboats to gun armed torpedoboats.  ;D

[Tanthalas]

LOL you forgot me in that catagory =P

[Sachmle]

Hey, now all my DDs have atleast 4 18" TT.

[Ithekro]

Torpedo diameter doesn't seem to effect them all that much in this case.  I suppose it makes it even more of an improvement over the previous class.  I suppose I should standardize along current rule lines and use the Confederate 18" (1899) that should have been researched in 1904 and 1905.  Perhaps they are just now becoming avalible for the destroyers after the scrapping of so many protected cruisers.

Guthláf

Rohan Destroyer laid down 1910 (Engine 1909)

Displacement:
   730 t light; 765 t standard; 875 t normal; 960 t full load

Dimensions: Length overall / water x beam x draught
   270.00 ft / 270.00 ft x 30.00 ft x 8.00 ft (normal load)
   82.30 m / 82.30 m x 9.14 m  x 2.44 m

Armament:
      3 - 4.50" / 114 mm guns in single mounts, 45.56lbs / 20.67kg shells, 1910 Model
     Quick firing guns in deck mounts
     on centreline, evenly spread
     Aft Main mounts separated by engine room
      4 - 0.75" / 19.1 mm guns in single mounts, 0.21lbs / 0.10kg shells, 1910 Model
     Quick firing guns in deck mounts
     on side, evenly spread
   Weight of broadside 138 lbs / 62 kg
   Shells per gun, main battery: 225
   4 - 18.0" / 457.2 mm above water torpedoes

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   1.00" / 25 mm         -               -

Machinery:
   Oil fired boilers, steam turbines,
   Direct drive, 1 shaft, 11,500 shp / 8,579 Kw = 26.05 kts
   Range 2,000nm at 15.00 kts (Bunkerage = 199 tons)

Complement:
   79 - 104

Cost:
   £0.096 million / $0.382 million

Distribution of weights at normal displacement:
   Armament: 17 tons, 2.0 %
   Armour: 7 tons, 0.9 %
      - Belts: 0 tons, 0.0 %
      - Torpedo bulkhead: 0 tons, 0.0 %
      - Armament: 7 tons, 0.9 %
      - Armour Deck: 0 tons, 0.0 %
      - Conning Tower: 0 tons, 0.0 %
   Machinery: 397 tons, 45.4 %
   Hull, fittings & equipment: 278 tons, 31.8 %
   Fuel, ammunition & stores: 145 tons, 16.6 %
   Miscellaneous weights: 30 tons, 3.4 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     382 lbs / 173 Kg = 8.4 x 4.5 " / 114 mm shells or 0.3 torpedoes
   Stability (Unstable if below 1.00): 1.40
   Metacentric height 1.5 ft / 0.5 m
   Steadiness   - As gun platform (Average = 50 %): 75 %
         - Recoil effect (Restricted arc if above 1.00): 0.21
   Seaboat quality  (Average = 1.00): 1.50

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.473
   Length to Beam Ratio: 9.00 : 1
   'Natural speed' for length: 16.43 kts
   Power going to wave formation at top speed: 64 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 0.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      18.00 ft / 5.49 m
      - Forecastle (20 %):   14.00 ft / 4.27 m
      - Mid (50 %):      14.00 ft / 4.27 m
      - Quarterdeck (15 %):   14.00 ft / 4.27 m
      - Stern:      14.00 ft / 4.27 m
      - Average freeboard:   14.32 ft / 4.36 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 166.1 %
      - Above water (accommodation/working, high = better): 133.3 %
   Waterplane Area: 5,267 Square feet or 489 Square metres
   Displacement factor (Displacement / loading): 72 %
   Structure weight / hull surface area: 26 lbs/sq ft or 127 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.50
      - Longitudinal: 2.87
      - Overall: 0.60
   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