Esc Corvettes

[ledeper]

01-99, Esc Corvettes laid down 1917 (Engine 1916)

Displacement:
   453 t light; 470 t standard; 550 t normal; 615 t full load

Dimensions: Length overall / water x beam x draught
   196,49 ft / 193,57 ft x 21,33 ft x 9,84 ft (normal load)
   59,89 m / 59,00 m x 6,50 m  x 3,00 m

Armament:
      2 - 3,94" / 100 mm guns in single mounts, 30,51lbs / 13,84kg shells, 1917 Model
     Quick firing guns in deck mounts
     on centreline, all forward, 1 raised mount
      1 - 1,57" / 40,0 mm guns in single mounts, 1,95lbs / 0,89kg shells, 1917 Model
     Anti-aircraft gun in deck mount
     on side, 1 raised gun
   Weight of broadside 63 lbs / 29 kg
   Shells per gun, main battery: 150

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0,98" / 25 mm         -               -

   - Conning tower: 0,98" / 25 mm

Machinery:
   Oil fired boilers, steam turbines,
   Geared drive, 12 shafts, 5.006 shp / 3.734 Kw = 22,00 kts
   Range 4.500nm at 12,00 kts
   Bunker at max displacement = 145 tons

Complement:
   56 - 73

Cost:
   £0,088 million / $0,353 million

Distribution of weights at normal displacement:
   Armament: 8 tons, 1,4 %
   Armour: 6 tons, 1,0 %
      - Belts: 0 tons, 0,0 %
      - Torpedo bulkhead: 0 tons, 0,0 %
      - Armament: 4 tons, 0,8 %
      - Armour Deck: 0 tons, 0,0 %
      - Conning Tower: 1 tons, 0,3 %
   Machinery: 186 tons, 33,9 %
   Hull, fittings & equipment: 213 tons, 38,8 %
   Fuel, ammunition & stores: 97 tons, 17,6 %
   Miscellaneous weights: 40 tons, 7,3 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     429 lbs / 195 Kg = 14,1 x 3,9 " / 100 mm shells or 0,3 torpedoes
   Stability (Unstable if below 1.00): 1,10
   Metacentric height 0,6 ft / 0,2 m
   Roll period: 11,7 seconds
   Steadiness   - As gun platform (Average = 50 %): 75 %
         - Recoil effect (Restricted arc if above 1.00): 0,33
   Seaboat quality  (Average = 1.00): 1,50

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0,474
   Length to Beam Ratio: 9,08 : 1
   'Natural speed' for length: 13,91 kts
   Power going to wave formation at top speed: 65 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 10,00 degrees
   Stern overhang: 0,00 ft / 0,00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      16,54 ft / 5,04 m
      - Forecastle (20 %):   10,53 ft / 3,21 m
      - Mid (50 %):      10,53 ft / 3,21 m
      - Quarterdeck (15 %):   10,53 ft / 3,21 m
      - Stern:      10,53 ft / 3,21 m
      - Average freeboard:   11,01 ft / 3,36 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 128,8 %
      - Above water (accommodation/working, high = better): 96,3 %
   Waterplane Area: 2.687 Square feet or 250 Square metres
   Displacement factor (Displacement / loading): 114 %
   Structure weight / hull surface area: 33 lbs/sq ft or 161 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,82
      - Longitudinal: 6,21
      - Overall: 1,00
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is adequate
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Wt 15 tns
DC 15 tns (45 DC)
D/C Gear 10 tn

[Kaiser Kirk]

12 shafts

Otherwise looks decent.

For my tastes, I'd rather see a diesel or VTE engine in such a craft.  I have the impression that in the real world, geared turbines would seem pricey and likely more maintenance intensive....but not sure.

[Tanthalas]

12 shafts

Otherwise looks decent.

For my tastes, I'd rather see a diesel or VTE engine in such a craft.  I have the impression that in the real world, geared turbines would seem pricey and likely more maintenance intensive....but not sure.

I agree Diesel on a ship like this.

[ledeper]

 ;) ;) :D

01-99, Esc Corvettes laid down 1917 (Engine 1916)

Displacement:
   453 t light; 470 t standard; 550 t normal; 615 t full load

Dimensions: Length overall / water x beam x draught
   196,49 ft / 193,57 ft x 21,33 ft x 9,84 ft (normal load)
   59,89 m / 59,00 m x 6,50 m  x 3,00 m

Armament:
     2 - 3,94" / 100 mm guns in single mounts, 30,51lbs / 13,84kg shells, 1917 Model
     Quick firing guns in deck mounts
     on centreline, all forward, 1 raised mount
     1 - 1,57" / 40,0 mm guns in single mounts, 1,95lbs / 0,88kg shells, 1917 Model
     Anti-aircraft gun in deck mount
     on side, 1 raised gun
   Weight of broadside 63 lbs / 29 kg
   Shells per gun, main battery: 150

Armour:
  - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0,98" / 25 mm         -               -

  - Conning tower: 0,98" / 25 mm

Machinery:
   Diesel Internal combustion motors,
   Direct drive, 1 shaft, 5.006 shp / 3.734 Kw = 22,00 kts
   Range 4.500nm at 12,00 kts
   Bunker at max displacement = 145 tons

Complement:
   56 - 73

Cost:
   £0,088 million / $0,353 million

Distribution of weights at normal displacement:
   Armament: 8 tons, 1,4 %
   Armour: 6 tons, 1,0 %
      - Belts: 0 tons, 0,0 %
      - Torpedo bulkhead: 0 tons, 0,0 %
      - Armament: 4 tons, 0,8 %
      - Armour Deck: 0 tons, 0,0 %
      - Conning Tower: 1 tons, 0,3 %
   Machinery: 186 tons, 33,9 %
   Hull, fittings & equipment: 213 tons, 38,8 %
   Fuel, ammunition & stores: 97 tons, 17,6 %
   Miscellaneous weights: 40 tons, 7,3 %

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     429 lbs / 195 Kg = 14,1 x 3,9 " / 100 mm shells or 0,3 torpedoes
   Stability (Unstable if below 1.00): 1,10
   Metacentric height 0,6 ft / 0,2 m
   Roll period: 11,7 seconds
   Steadiness   - As gun platform (Average = 50 %): 75 %
         - Recoil effect (Restricted arc if above 1.00): 0,33
   Seaboat quality  (Average = 1.00): 1,50

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0,474
   Length to Beam Ratio: 9,08 : 1
   'Natural speed' for length: 13,91 kts
   Power going to wave formation at top speed: 65 %
   Trim (Max stability = 0, Max steadiness = 100): 50
   Bow angle (Positive = bow angles forward): 10,00 degrees
   Stern overhang: 0,00 ft / 0,00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      16,54 ft / 5,04 m
      - Forecastle (20 %):   10,53 ft / 3,21 m
      - Mid (50 %):      10,53 ft / 3,21 m
      - Quarterdeck (15 %):   10,53 ft / 3,21 m
      - Stern:      10,53 ft / 3,21 m
      - Average freeboard:   11,01 ft / 3,36 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 128,8 %
      - Above water (accommodation/working, high = better): 96,3 %
   Waterplane Area: 2.687 Square feet or 250 Square metres
   Displacement factor (Displacement / loading): 114 %
   Structure weight / hull surface area: 33 lbs/sq ft or 161 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,82
      - Longitudinal: 6,21
      - Overall: 1,00
   Hull space for machinery, storage, compartmentation is cramped
   Room for accommodation and workspaces is adequate
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

Wt 15 tns
DC 15 tns (45 DC)
D/C Gear 10 tn

[mentat]

not sure on small ships - but they do seem a bit thin - narrow beam of just 21' - and stability is quite low at 1.1

would something a bit 'fatter' be safer ship?