Rohirrim Tender for 1913

[Ithekro]

Designed to replace the existing (and rather old) auxilery forces and provide range to Rohan's Navy if needed.

Tol Eressea

Rohan Tender laid down 1913 (Engine 1912)

Displacement:
   10,444 t light; 10,692 t standard; 12,000 t normal; 12,999 t full load

Dimensions: Length overall / water x beam x draught
   400.00 ft / 400.00 ft x 70.00 ft x 20.00 ft (normal load)
   121.92 m / 121.92 m x 21.34 m  x 6.10 m

Armament:
      2 - 4.50" / 114 mm guns in single mounts, 45.56lbs / 20.67kg shells, 1913 Model
     Quick firing guns in deck mounts
     on centreline ends, evenly spread
      2 - 0.75" / 19.1 mm guns in single mounts, 0.21lbs / 0.10kg shells, 1913 Model
     Machine guns in deck mounts
     on side, all amidships
   Weight of broadside 92 lbs / 42 kg
   Shells per gun, main battery: 150

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 1 shaft, 7,500 ihp / 5,595 Kw = 15.50 kts
   Range 10,000nm at 10.00 kts (Bunkerage = 2,355 tons)

Complement:
   573 - 745

Cost:
   £0.485 million / $1.940 million

Distribution of weights at normal displacement:
   Armament: 11 tons, 0.1 %
   Machinery: 497 tons, 4.1 %
   Hull, fittings & equipment: 3,936 tons, 32.8 %
   Fuel, ammunition & stores: 1,556 tons, 13.0 %
   Miscellaneous weights: 6,000 tons, 50.0 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     16,750 lbs / 7,598 Kg = 367.6 x 4.5 " / 114 mm shells or 2.5 torpedoes
   Stability (Unstable if below 1.00): 1.04
   Metacentric height 3.2 ft / 1.0 m
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.01
   Seaboat quality  (Average = 1.00): 1.89

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.750
   Length to Beam Ratio: 5.71 : 1
   'Natural speed' for length: 20.00 kts
   Power going to wave formation at top speed: 41 %
   Trim (Max stability = 0, Max steadiness = 100): 37
   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:      20.00 ft / 6.10 m
      - Forecastle (20 %):   16.00 ft / 4.88 m
      - Mid (50 %):      16.00 ft / 4.88 m
      - Quarterdeck (15 %):   16.00 ft / 4.88 m
      - Stern:      16.00 ft / 4.88 m
      - Average freeboard:   16.32 ft / 4.97 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 69.2 %
      - Above water (accommodation/working, high = better): 124.7 %
   Waterplane Area: 23,451 Square feet or 2,179 Square metres
   Displacement factor (Displacement / loading): 169 %
   Structure weight / hull surface area: 124 lbs/sq ft or 605 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 1.47
      - Longitudinal: 2.30
      - Overall: 1.53
   Hull space for machinery, storage, compartmentation is excellent
   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

[The Rock Doctor]

Tenders ought to have high freeboard, so there's room for workshops and accommodation.  Since you've got ample hull strength, raise freeboard up to ~8 metres or so...

[Ithekro]

You mean like this?

Tol Eressea

Rohan Tender laid down 1913 (Engine 1912)

Displacement:
   10,444 t light; 10,692 t standard; 12,000 t normal; 12,999 t full load

Dimensions: Length overall / water x beam x draught
   400.00 ft / 400.00 ft x 70.00 ft x 20.00 ft (normal load)
   121.92 m / 121.92 m x 21.34 m  x 6.10 m

Armament:
      2 - 4.50" / 114 mm guns in single mounts, 45.56lbs / 20.67kg shells, 1913 Model
     Quick firing guns in deck mounts
     on centreline ends, evenly spread
      2 - 0.75" / 19.1 mm guns in single mounts, 0.21lbs / 0.10kg shells, 1913 Model
     Machine guns in deck mounts
     on side, all amidships
   Weight of broadside 92 lbs / 42 kg
   Shells per gun, main battery: 150

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 1 shaft, 7,500 ihp / 5,595 Kw = 15.50 kts
   Range 10,000nm at 10.00 kts (Bunkerage = 2,355 tons)

Complement:
   573 - 745

Cost:
   £0.485 million / $1.940 million

Distribution of weights at normal displacement:
   Armament: 11 tons, 0.1 %
   Machinery: 497 tons, 4.1 %
   Hull, fittings & equipment: 3,936 tons, 32.8 %
   Fuel, ammunition & stores: 1,556 tons, 13.0 %
   Miscellaneous weights: 6,000 tons, 50.0 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     27,659 lbs / 12,546 Kg = 607.1 x 4.5 " / 114 mm shells or 2.8 torpedoes
   Stability (Unstable if below 1.00): 1.05
   Metacentric height 3.2 ft / 1.0 m
   Steadiness   - As gun platform (Average = 50 %): 30 %
         - Recoil effect (Restricted arc if above 1.00): 0.01
   Seaboat quality  (Average = 1.00): 1.20

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.750
   Length to Beam Ratio: 5.71 : 1
   'Natural speed' for length: 20.00 kts
   Power going to wave formation at top speed: 41 %
   Trim (Max stability = 0, Max steadiness = 100): 15
   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:      38.00 ft / 11.58 m
      - Forecastle (20 %):   38.00 ft / 11.58 m
      - Mid (50 %):      38.00 ft / 11.58 m
      - Quarterdeck (15 %):   38.00 ft / 11.58 m
      - Stern:      38.00 ft / 11.58 m
      - Average freeboard:   38.00 ft / 11.58 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 69.2 %
      - Above water (accommodation/working, high = better): 296.2 %
   Waterplane Area: 23,451 Square feet or 2,179 Square metres
   Displacement factor (Displacement / loading): 169 %
   Structure weight / hull surface area: 82 lbs/sq ft or 400 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.76
      - Longitudinal: 11.68
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is excellent
   Room for accommodation and workspaces is excellent
   Good seaboat, rides out heavy weather easily

[The Rock Doctor]

That's a little more than I had in mind - I meant the actual freeboard should be in the seven to eight metre range.  It'll leave some hull strength left over - you could then increase miscellaneous weight some.

[Ithekro]

Oh.

So this then would fit better?

Tol Eressea, Rohan Tender laid down 1913 (Engine 1912)

Displacement:
   10,444 t light; 10,692 t standard; 12,000 t normal; 12,999 t full load

Dimensions: Length overall / water x beam x draught
   400.00 ft / 400.00 ft x 70.00 ft x 20.00 ft (normal load)
   121.92 m / 121.92 m x 21.34 m  x 6.10 m

Armament:
      2 - 4.50" / 114 mm guns in single mounts, 45.56lbs / 20.67kg shells, 1913 Model
     Quick firing guns in deck mounts
     on centreline ends, evenly spread
      2 - 0.75" / 19.1 mm guns in single mounts, 0.21lbs / 0.10kg shells, 1913 Model
     Machine guns in deck mounts
     on side, all amidships
   Weight of broadside 92 lbs / 42 kg
   Shells per gun, main battery: 150

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 1 shaft, 7,500 ihp / 5,595 Kw = 15.50 kts
   Range 10,000nm at 10.00 kts (Bunkerage = 2,355 tons)

Complement:
   573 - 745

Cost:
   £0.485 million / $1.940 million

Distribution of weights at normal displacement:
   Armament: 11 tons, 0.1 %
   Machinery: 497 tons, 4.1 %
   Hull, fittings & equipment: 3,111 tons, 25.9 %
   Fuel, ammunition & stores: 1,556 tons, 13.0 %
   Miscellaneous weights: 6,825 tons, 56.9 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     20,518 lbs / 9,307 Kg = 450.3 x 4.5 " / 114 mm shells or 2.4 torpedoes
   Stability (Unstable if below 1.00): 1.09
   Metacentric height 3.5 ft / 1.1 m
   Steadiness   - As gun platform (Average = 50 %): 30 %
         - Recoil effect (Restricted arc if above 1.00): 0.01
   Seaboat quality  (Average = 1.00): 1.20

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0.750
   Length to Beam Ratio: 5.71 : 1
   'Natural speed' for length: 20.00 kts
   Power going to wave formation at top speed: 41 %
   Trim (Max stability = 0, Max steadiness = 100): 15
   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:      30.00 ft / 9.14 m
      - Forecastle (20 %):   27.00 ft / 8.23 m
      - Mid (50 %):      27.00 ft / 8.23 m
      - Quarterdeck (15 %):   27.00 ft / 8.23 m
      - Stern:      27.00 ft / 8.23 m
      - Average freeboard:   27.24 ft / 8.30 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 76.6 %
      - Above water (accommodation/working, high = better): 210.5 %
   Waterplane Area: 23,451 Square feet or 2,179 Square metres
   Displacement factor (Displacement / loading): 152 %
   Structure weight / hull surface area: 83 lbs/sq ft or 408 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.86
      - Longitudinal: 3.70
      - Overall: 1.00
   Hull space for machinery, storage, compartmentation is excellent
   Room for accommodation and workspaces is excellent
   Good seaboat, rides out heavy weather easily

[The Rock Doctor]

Absolutely.