French Auxilaries

[maddox]

With the new Marine Corp, France is looking to augment the capacity of le Magnificent.

One of the proposals is the Trans-mer

Trans-mer, French Troop transport laid down 1919 (Engine 1916)

Displacement:
   5.000 t light; 5.128 t standard; 6.015 t normal; 6.725 t full load

Dimensions: Length overall / water x beam x draught
   393,08 ft / 387,14 ft x 59,06 ft x 16,40 ft (normal load)
   119,81 m / 118,00 m x 18,00 m  x 5,00 m

Armament:
      4 - 2,76" / 70,0 mm guns in single mounts, 10,47lbs / 4,75kg shells, 1912 Model
     Quick firing guns in deck mounts
     on side ends, evenly spread
      4 - 1,46" / 37,0 mm guns in single mounts, 1,55lbs / 0,70kg shells, 1916 Model
     Anti-aircraft guns in deck mounts
     on side ends, evenly spread, all raised mounts - superfiring
   Weight of broadside 48 lbs / 22 kg
   Shells per gun, main battery: 250

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0,50" / 13 mm   0,50" / 13 mm            -
   2nd:   0,50" / 13 mm   0,50" / 13 mm            -

Machinery:
   Diesel Internal combustion motors,
   Direct drive, 2 shafts, 8.115 shp / 6.054 Kw = 18,00 kts
   Range 6.000nm at 16,00 kts
   Bunker at max displacement = 1.597 tons

Complement:
   340 - 443

Cost:
   £0,485 million / $1,941 million

Distribution of weights at normal displacement:
   Armament: 6 tons, 0,1%
   Armour: 6 tons, 0,1%
      - Belts: 0 tons, 0,0%
      - Torpedo bulkhead: 0 tons, 0,0%
      - Armament: 6 tons, 0,1%
      - Armour Deck: 0 tons, 0,0%
      - Conning Tower: 0 tons, 0,0%
   Machinery: 302 tons, 5,0%
   Hull, fittings & equipment: 1.546 tons, 25,7%
   Fuel, ammunition & stores: 1.015 tons, 16,9%
   Miscellaneous weights: 3.140 tons, 52,2%

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     8.484 lbs / 3.848 Kg = 810,7 x 2,8 " / 70 mm shells or 1,8 torpedoes
   Stability (Unstable if below 1.00): 1,10
   Metacentric height 2,7 ft / 0,8 m
   Roll period: 15,0 seconds
   Steadiness   - As gun platform (Average = 50 %): 53 %
         - Recoil effect (Restricted arc if above 1.00): 0,01
   Seaboat quality  (Average = 1.00): 1,72

Hull form characteristics:
   Hull has a flush deck
   Block coefficient: 0,561
   Length to Beam Ratio: 6,56 : 1
   'Natural speed' for length: 19,68 kts
   Power going to wave formation at top speed: 44 %
   Trim (Max stability = 0, Max steadiness = 100): 31
   Bow angle (Positive = bow angles forward): 7,00 degrees
   Stern overhang: 3,28 ft / 1,00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      21,65 ft / 6,60 m
      - Forecastle (20%):   13,12 ft / 4,00 m
      - Mid (50%):      13,12 ft / 4,00 m
      - Quarterdeck (15%):   13,12 ft / 4,00 m
      - Stern:      13,12 ft / 4,00 m
      - Average freeboard:   13,81 ft / 4,21 m

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 74,5%
      - Above water (accommodation/working, high = better): 118,6%
   Waterplane Area: 16.126 Square feet or 1.498 Square metres
   Displacement factor (Displacement / loading): 158%
   Structure weight / hull surface area: 69 lbs/sq ft or 335 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,97
      - Longitudinal: 1,33
      - Overall: 1,00
   Hull space for machinery, storage, compartmentation is excellent
   Room for accommodation and workspaces is adequate
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

misc weight

1200 troops - 2400 tons
600 ton boats/landing barges
340 ton equipment/supplies

[maddox]

Gaseuze, French Blimp support vessel laid down 1920

Displacement:
   4.000 t light; 4.126 t standard; 5.679 t normal; 6.921 t full load

Dimensions: Length overall / water x beam x draught
   393,70 ft / 390,42 ft x 62,34 ft x 13,45 ft (normal load)
   120,00 m / 119,00 m x 19,00 m  x 4,10 m

Armament:
      4 - 2,76" / 70,0 mm guns in single mounts, 11,02lbs / 5,00kg shells, 1912 Model
     Quick firing guns in deck mounts
     on side, all forward
      2 - 1,46" / 37,0 mm guns in single mounts, 1,55lbs / 0,70kg shells, 1914 Model
     Anti-aircraft guns in deck mounts
     on side, all forward, all raised mounts - superfiring
   Weight of broadside 47 lbs / 21 kg
   Shells per gun, main battery: 450

Machinery:
   Coal and oil fired boilers, complex reciprocating steam engines,
   Direct drive, 2 shafts, 17.825 ihp / 13.297 Kw = 22,00 kts
   Range 8.000nm at 16,00 kts
   Bunker at max displacement = 2.795 tons (50% coal)

Complement:
   326 - 425

Cost:
   £0,705 million / $2,818 million

Distribution of weights at normal displacement:
   Armament: 6 tons, 0,1%
   Machinery: 1.095 tons, 19,3%
   Hull, fittings & equipment: 1.649 tons, 29,0%
   Fuel, ammunition & stores: 1.679 tons, 29,6%
   Miscellaneous weights: 1.250 tons, 22,0%

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     8.319 lbs / 3.774 Kg = 794,9 x 2,8 " / 70 mm shells or 1,6 torpedoes
   Stability (Unstable if below 1.00): 1,32
   Metacentric height 4,1 ft / 1,2 m
   Roll period: 13,0 seconds
   Steadiness   - As gun platform (Average = 50 %): 74 %
         - Recoil effect (Restricted arc if above 1.00): 0,00
   Seaboat quality  (Average = 1.00): 1,26

Hull form characteristics:
   Hull has raised forecastle
   Block coefficient: 0,607
   Length to Beam Ratio: 6,26 : 1
   'Natural speed' for length: 19,76 kts
   Power going to wave formation at top speed: 55 %
   Trim (Max stability = 0, Max steadiness = 100): 59
   Bow angle (Positive = bow angles forward): 0,00 degrees
   Stern overhang: 3,28 ft / 1,00 m
   Freeboard (% = measuring location as a percentage of overall length):
      - Stem:      19,69 ft / 6,00 m
      - Forecastle (32%):   19,69 ft / 6,00 m (13,78 ft / 4,20 m aft of break)
      - Mid (50%):      13,78 ft / 4,20 m
      - Quarterdeck (15%):   13,78 ft / 4,20 m
      - Stern:      13,78 ft / 4,20 m
      - Average freeboard:   15,67 ft / 4,78 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 88,0%
      - Above water (accommodation/working, high = better): 144,3%
   Waterplane Area: 17.919 Square feet or 1.665 Square metres
   Displacement factor (Displacement / loading): 163%
   Structure weight / hull surface area: 69 lbs/sq ft or 335 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0,96
      - Longitudinal: 1,37
      - Overall: 1,00
   Hull space for machinery, storage, compartmentation is adequate
   Room for accommodation and workspaces is excellent
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

Designed to support the Coast guard blimps

Misc weight

250 tons mooring mast + winches
250 tons hydrogen plant
250 tons workshop
100 tons collapsable, heavy gauge canvas hangar aft
250 tons internal hold, capable to hold one deflated blimp
25 tons long range Marconi
25 tons DD style firecontrol (to aid incoming blimps)
25 tons ERADe
50 tons crew comfort
25 tons reserve.