Nova Francia Fleet

[Jefgte]

I reSS BB4 & BB5

BB4, Nova Francia BB4 laid down 1904

Displacement:
   16 475 t light; 17 411 t standard; 18 800 t normal; 19 911 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (497.00 ft / 492.00 ft) x 78.75 ft x (27.39 / 28.74 ft)
   (151.49 m / 149.96 m) x 24.00 m  x (8.35 / 8.76 m)

Armament:
      4 - 12.00" / 305 mm 45.0 cal guns - 871.38lbs / 395.25kg shells, 100 per gun
     Breech loading guns in turret on barbette mounts, 1904 Model
     2 x Twin mounts on centreline ends, evenly spread
      8 - 9.45" / 240 mm 50.0 cal guns - 485.00lbs / 219.99kg shells, 120 per gun
     Breech loading guns in turret on barbette mounts, 1904 Model
     4 x Twin mounts on side ends, evenly spread
      8 - 5.50" / 140 mm 45.0 cal guns - 83.91lbs / 38.06kg shells, 180 per gun
     Breech loading guns in casemate mounts, 1904 Model
     8 x Single mounts on sides, evenly spread
      8 - 3.95" / 100 mm 45.0 cal guns - 31.09lbs / 14.10kg shells, 250 per gun
     Quick firing guns in deck mounts, 1904 Model
     8 x Single mounts on sides, evenly spread
      8 raised mounts
      8 - 1.85" / 47.0 mm 76.0 cal guns - 3.59lbs / 1.63kg shells, 400 per gun
     Quick firing guns in deck mounts, 1904 Model
     8 x Single mounts on centreline ends, evenly spread
      8 raised mounts
      Weight of broadside 8 314 lbs / 3 771 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   10.6" / 270 mm   340.00 ft / 103.63 m   9.85 ft / 3.00 m
   Ends:   5.90" / 150 mm   104.00 ft / 31.70 m   7.86 ft / 2.40 m
     48.00 ft / 14.63 m Unarmoured ends
   Upper:   5.90" / 150 mm   340.00 ft / 103.63 m   10.50 ft / 3.20 m
     Main Belt covers 106 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   11.8" / 300 mm   5.90" / 150 mm      11.0" / 280 mm
   2nd:   6.70" / 170 mm   3.95" / 100 mm      5.90" / 150 mm
   3rd:   1.20" / 30 mm         -         1.20" / 30 mm
   4th:   0.40" / 10 mm         -               -

   - Armoured deck - multiple decks:
   For and Aft decks: 2.55" / 65 mm
   Forecastle: 1.57" / 40 mm  Quarter deck: 1.57" / 40 mm

   - Conning towers: Forward 11.02" / 280 mm, Aft 7.87" / 200 mm

Machinery:
   Coal and oil fired boilers, complex reciprocating steam engines,
   Direct drive, 3 shafts, 27 798 ihp / 20 737 Kw = 21.00 kts
   Range 5 000nm at 12.00 kts
   Bunker at max displacement = 2 500 tons (90% coal)

Complement:
   802 - 1 043

Cost:
   £1.887 million / $7.547 million

Distribution of weights at normal displacement:
   Armament: 1 660 tons, 8.8 %
      - Guns: 1 660 tons, 8.8 %
   Armour: 5 416 tons, 28.8 %
      - Belts: 2 628 tons, 14.0 %
      - Armament: 1 249 tons, 6.6 %
      - Armour Deck: 1 251 tons, 6.7 %
      - Conning Towers: 288 tons, 1.5 %
   Machinery: 4 047 tons, 21.5 %
   Hull, fittings & equipment: 5 332 tons, 28.4 %
   Fuel, ammunition & stores: 2 325 tons, 12.4 %
   Miscellaneous weights: 20 tons, 0.1 %
      - On freeboard deck: 20 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     15 998 lbs / 7 256 Kg = 18.5 x 12.0 " / 305 mm shells or 1.8 torpedoes
   Stability (Unstable if below 1.00): 1.22
   Metacentric height 5.0 ft / 1.5 m
   Roll period: 14.8 seconds
   Steadiness   - As gun platform (Average = 50 %): 72 %
         - Recoil effect (Restricted arc if above 1.00): 0.64
   Seaboat quality  (Average = 1.00): 1.35

Hull form characteristics:
   Hull has a flush deck,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0.620 / 0.626
   Length to Beam Ratio: 6.25 : 1
   'Natural speed' for length: 22.18 kts
   Power going to wave formation at top speed: 49 %
   Trim (Max stability = 0, Max steadiness = 100): 53
   Bow angle (Positive = bow angles forward): 5.00 degrees
   Stern overhang: 1.00 ft / 0.30 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  18.05 ft / 5.50 m,  16.92 ft / 5.16 m
      - Forward deck:   30.00 %,  16.92 ft / 5.16 m,  16.92 ft / 5.16 m
      - Aft deck:   30.00 %,  16.92 ft / 5.16 m,  16.92 ft / 5.16 m
      - Quarter deck:   20.00 %,  16.92 ft / 5.16 m,  16.92 ft / 5.16 m
      - Average freeboard:      17.01 ft / 5.18 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 106.1 %
      - Above water (accommodation/working, high = better): 116.0 %
   Waterplane Area: 28 870 Square feet or 2 682 Square metres
   Displacement factor (Displacement / loading): 91 %
   Structure weight / hull surface area: 148 lbs/sq ft or 722 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.93
      - Longitudinal: 1.79
      - Overall: 1.00
   Adequate machinery, storage, compartmentation space
   Adequate accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

---
BB5, Nova Francia BB5 laid down 1906

Displacement:
   16 401 t light; 17 451 t standard; 18 800 t normal; 19 880 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (497.00 ft / 492.00 ft) x 78.75 ft x (27.39 / 28.70 ft)
   (151.49 m / 149.96 m) x 24.00 m  x (8.35 / 8.75 m)

Armament:
      4 - 12.00" / 305 mm 45.0 cal guns - 871.38lbs / 395.25kg shells, 100 per gun
     Breech loading guns in turret on barbette mounts, 1906 Model
     2 x Twin mounts on centreline ends, evenly spread
      2 - 12.00" / 305 mm 45.0 cal guns - 871.37lbs / 395.24kg shells, 100 per gun
     Breech loading guns in turret on barbette mount, 1906 Model
     1 x Twin mount on centreline, aft deck forward
      16 - 7.65" / 194 mm 45.0 cal guns - 225.76lbs / 102.40kg shells, 160 per gun
     Breech loading guns in casemate mounts, 1906 Model
     16 x Single mounts on side ends, evenly spread
      8 raised mounts
      16 - 3.95" / 100 mm 45.0 cal guns - 31.09lbs / 14.10kg shells, 200 per gun
     Quick firing guns in deck mounts, 1906 Model
     16 x Single mounts on side ends, evenly spread
      16 raised mounts
      8 - 1.85" / 47.0 mm 76.0 cal guns - 3.59lbs / 1.63kg shells, 400 per gun
     Quick firing guns in deck mounts, 1906 Model
     8 x Single mounts on centreline ends, evenly spread
      8 raised mounts
      Weight of broadside 9 366 lbs / 4 249 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   10.6" / 270 mm   328.10 ft / 100.00 m   9.85 ft / 3.00 m
   Ends:   5.90" / 150 mm   130.00 ft / 39.62 m   7.86 ft / 2.40 m
     33.90 ft / 10.33 m Unarmoured ends
   Upper:   5.90" / 150 mm   328.10 ft / 100.00 m   10.50 ft / 3.20 m
     Main Belt covers 103 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   11.8" / 300 mm   5.90" / 150 mm      11.0" / 280 mm
   2nd:   11.8" / 300 mm   5.90" / 150 mm      11.2" / 284 mm
   3rd:   5.90" / 150 mm   1.57" / 40 mm      3.95" / 100 mm
   4th:   1.57" / 40 mm         -               -

   - Armoured deck - multiple decks:
   For and Aft decks: 2.55" / 65 mm
   Forecastle: 1.57" / 40 mm  Quarter deck: 1.57" / 40 mm

   - Conning towers: Forward 11.02" / 280 mm, Aft 7.87" / 200 mm

Machinery:
   Coal and oil fired boilers, complex reciprocating steam engines,
   Direct drive, 3 shafts, 27 798 ihp / 20 737 Kw = 21.00 kts
   Range 5 000nm at 12.00 kts
   Bunker at max displacement = 2 429 tons (90% coal)

Complement:
   802 - 1 043

Cost:
   £1.809 million / $7.236 million

Distribution of weights at normal displacement:
   Armament: 1 556 tons, 8.3 %
      - Guns: 1 556 tons, 8.3 %
   Armour: 5 494 tons, 29.2 %
      - Belts: 2 612 tons, 13.9 %
      - Armament: 1 334 tons, 7.1 %
      - Armour Deck: 1 261 tons, 6.7 %
      - Conning Towers: 288 tons, 1.5 %
   Machinery: 3 932 tons, 20.9 %
   Hull, fittings & equipment: 5 400 tons, 28.7 %
   Fuel, ammunition & stores: 2 399 tons, 12.8 %
   Miscellaneous weights: 20 tons, 0.1 %
      - On freeboard deck: 20 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     17 650 lbs / 8 006 Kg = 20.4 x 12.0 " / 305 mm shells or 1.9 torpedoes
   Stability (Unstable if below 1.00): 1.27
   Metacentric height 5.4 ft / 1.6 m
   Roll period: 14.3 seconds
   Steadiness   - As gun platform (Average = 50 %): 73 %
         - Recoil effect (Restricted arc if above 1.00): 0.63
   Seaboat quality  (Average = 1.00): 1.38

Hull form characteristics:
   Hull has a flush deck,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0.620 / 0.626
   Length to Beam Ratio: 6.25 : 1
   'Natural speed' for length: 22.18 kts
   Power going to wave formation at top speed: 49 %
   Trim (Max stability = 0, Max steadiness = 100): 53
   Bow angle (Positive = bow angles forward): 5.00 degrees
   Stern overhang: 1.00 ft / 0.30 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  17.92 ft / 5.46 m,  16.92 ft / 5.16 m
      - Forward deck:   30.00 %,  16.92 ft / 5.16 m,  16.92 ft / 5.16 m
      - Aft deck:   32.00 %,  16.92 ft / 5.16 m,  16.92 ft / 5.16 m
      - Quarter deck:   18.00 %,  16.92 ft / 5.16 m,  16.92 ft / 5.16 m
      - Average freeboard:      17.00 ft / 5.18 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 102.2 %
      - Above water (accommodation/working, high = better): 116.0 %
   Waterplane Area: 28 870 Square feet or 2 682 Square metres
   Displacement factor (Displacement / loading): 94 %
   Structure weight / hull surface area: 149 lbs/sq ft or 726 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.93
      - Longitudinal: 1.87
      - Overall: 1.00
   Adequate machinery, storage, compartmentation space
   Adequate accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

[KWorld]

>  8 - 1.85" / 47.0 mm 76.0 cal guns - 3.59lbs / 1.63kg shells, 400 per gun
>     Quick firing guns in deck mounts, 1906 Model
>     8 x Single mounts on centreline ends, evenly spread
>      8 raised mounts

I'm not buying the centerline layout, these should be side mounted.


That's a real forest of guns on the BB5s, it's not a pretty sight if you've got a scout or light cruiser squadron and are supposed to make a torpedo run.  Not so bad for TBs or DDs, the 194s in casemates won't be ideal for firing at those, but bigger units without heavy armor..... not liking it AT ALL.


The one thing I'd look at is the relatively short main belt: only a touch less than 2m of hull above the waterline is protected by the main belt.

[Jefgte]

>  8 - 1.85" / 47.0 mm 76.0 cal guns - 3.59lbs / 1.63kg shells, 400 per gun
>     Quick firing guns in deck mounts, 1906 Model
>     8 x Single mounts on centreline ends, evenly spread
>      8 raised mounts

I'm not buying the centerline layout, these should be side mounted

47mm guns are mounted on the military mast on the bridges, a typical layout on the French PDs.
 

[KWorld]

The historical guns in the military masts are mounted in the gun ports of the mast, they're not in a position to point to both sides of the ship, which "centerline" usually implies.

[Jefgte]

Reading again Russo Jap 1904 war, I have reSS BB1 in the BB Petropavlosk spirit.

Note the low freaboard & the correct survivability.

BB1, Nova Francia BB1 laid down 1897

Displacement:
   8 989 t light; 9 480 t standard; 10 625 t normal; 11 542 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (371.44 ft / 367.44 ft) x 73.50 ft x (22.95 / 24.57 ft)
   (113.21 m / 112.00 m) x 22.40 m  x (7.00 / 7.49 m)

Armament:
      4 - 12.00" / 305 mm 45.0 cal guns - 871.38lbs / 395.25kg shells, 100 per gun
     Breech loading guns in turret on barbette mounts, 1897 Model
     2 x Twin mounts on centreline ends, evenly spread
      8 - 5.50" / 140 mm 45.0 cal guns - 83.91lbs / 38.06kg shells, 180 per gun
     Breech loading guns in casemate mounts, 1897 Model
     8 x Single mounts on sides, evenly spread
      6 - 2.95" / 75.0 mm 62.5 cal guns - 14.18lbs / 6.43kg shells, 300 per gun
     Quick firing guns in casemate mounts, 1897 Model
     6 x Single mounts on sides, evenly spread
      6 raised mounts
      4 - 1.85" / 47.0 mm 62.5 cal guns - 3.48lbs / 1.58kg shells, 400 per gun
     Quick firing guns in deck mounts, 1897 Model
     4 x Single mounts on sides, evenly spread
      4 raised mounts
      4 - 0.52" / 13.2 mm 76.0 cal guns - 0.09lbs / 0.04kg shells, 3 000 per gun
     Breech loading guns in deck mounts, 1897 Model
     4 x 2 row twin mounts on sides, evenly spread
      4 raised mounts
      Weight of broadside 4 256 lbs / 1 931 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   9.85" / 250 mm   236.22 ft / 72.00 m   9.85 ft / 3.00 m
   Ends:   5.50" / 140 mm   118.12 ft / 36.00 m   7.86 ft / 2.40 m
     13.10 ft / 3.99 m Unarmoured ends
   Upper:   5.50" / 140 mm   236.22 ft / 72.00 m   6.55 ft / 2.00 m
     Main Belt covers 99 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   11.8" / 300 mm   3.95" / 100 mm      10.6" / 270 mm
   2nd:   3.95" / 100 mm   1.95" / 50 mm      1.95" / 50 mm
   3rd:   1.20" / 30 mm         -         1.20" / 30 mm
   4th:   0.40" / 10 mm         -               -
   5th:   0.40" / 10 mm         -               -

   - Armoured deck - multiple decks:
   For and Aft decks: 2.55" / 65 mm
   Forecastle: 1.20" / 30 mm  Quarter deck: 1.20" / 30 mm

   - Conning towers: Forward 10.05" / 255 mm, Aft 7.10" / 180 mm

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 2 shafts, 12 079 ihp / 9 011 Kw = 18.00 kts
   Range 5 000nm at 12.00 kts
   Bunker at max displacement = 2 062 tons (100% coal)

Complement:
   523 - 680

Cost:
   £0.956 million / $3.825 million

Distribution of weights at normal displacement:
   Armament: 748 tons, 7.0 %
      - Guns: 748 tons, 7.0 %
   Armour: 3 215 tons, 30.3 %
      - Belts: 1 626 tons, 15.3 %
      - Armament: 576 tons, 5.4 %
      - Armour Deck: 834 tons, 7.8 %
      - Conning Towers: 179 tons, 1.7 %
   Machinery: 1 980 tons, 18.6 %
   Hull, fittings & equipment: 3 030 tons, 28.5 %
   Fuel, ammunition & stores: 1 637 tons, 15.4 %
   Miscellaneous weights: 16 tons, 0.2 %
      - On freeboard deck: 16 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     11 359 lbs / 5 153 Kg = 13.1 x 12.0 " / 305 mm shells or 1.8 torpedoes
   Stability (Unstable if below 1.00): 1.41
   Metacentric height 5.7 ft / 1.7 m
   Roll period: 12.9 seconds
   Steadiness   - As gun platform (Average = 50 %): 73 %
         - Recoil effect (Restricted arc if above 1.00): 0.30
   Seaboat quality  (Average = 1.00): 1.25

Hull form characteristics:
   Hull has a flush deck,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0.600 / 0.609
   Length to Beam Ratio: 5.00 : 1
   'Natural speed' for length: 19.17 kts
   Power going to wave formation at top speed: 51 %
   Trim (Max stability = 0, Max steadiness = 100): 58
   Bow angle (Positive = bow angles forward): -10.00 degrees
   Stern overhang: 1.00 ft / 0.30 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   20.00 %,  12.47 ft / 3.80 m,  12.47 ft / 3.80 m
      - Forward deck:   30.00 %,  12.47 ft / 3.80 m,  12.47 ft / 3.80 m
      - Aft deck:   32.00 %,  12.47 ft / 3.80 m,  12.47 ft / 3.80 m
      - Quarter deck:   18.00 %,  12.47 ft / 3.80 m,  12.47 ft / 3.80 m
      - Average freeboard:      12.47 ft / 3.80 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 92.2 %
      - Above water (accommodation/working, high = better): 89.7 %
   Waterplane Area: 19 752 Square feet or 1 835 Square metres
   Displacement factor (Displacement / loading): 100 %
   Structure weight / hull surface area: 126 lbs/sq ft or 615 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.93
      - Longitudinal: 2.01
      - Overall: 1.00
   Adequate machinery, storage, compartmentation space
   Cramped accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Good seaboat, rides out heavy weather easily

[KWorld]

>       4 - 0.52" / 13.2 mm 76.0 cal guns - 0.09lbs / 0.04kg shells, 3 000 per gun
>     Breech loading guns in deck mounts, 1897 Model
>     4 x 2 row twin mounts on sides, evenly spread

I suspect these are supposed to be machineguns of some sort, rather than breech loaders (certainly they'd be quick-firers, even if they were single-shots).  Also, the mount is showing a quad mounting, but the number of guns says a single mounting.

[Jefgte]

I have seen other SS mistakes:

Conning tower is 255mm...

Main armors on this BB are 250-270-300, not 255.

Jef  ;)

[Jefgte]

Testing a 700t PB4, in place of the 420t

PB4, Nova Francia PB4-700t laid down 1909

Displacement:
   454 t light; 483 t standard; 700 t normal; 873 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (140.00 ft / 138.00 ft) x 23.00 ft x (12.86 / 15.47 ft)
   (42.67 m / 42.06 m) x 7.01 m  x (3.92 / 4.71 m)

Armament:
      2 - 5.50" / 140 mm 45.0 cal guns - 83.90lbs / 38.05kg shells, 100 per gun
     Quick firing guns in casemate mounts, 1909 Model
     2 x Single mounts on centreline ends, evenly spread
      2 - 3.95" / 100 mm 45.0 cal guns - 31.13lbs / 14.12kg shells, 180 per gun
     Quick firing guns in casemate mounts, 1909 Model
     2 x Single mounts on sides, forward deck aft
      4 - 0.52" / 13.2 mm 76.0 cal guns - 0.09lbs / 0.04kg shells, 3 000 per gun
     Machine guns in deck mounts, 1909 Model
     4 x Single mounts on centreline, forward evenly spread
      4 raised mounts
      Weight of broadside 230 lbs / 105 kg

Armour:
   - Belts:      Width (max)   Length (avg)      Height (avg)
   Main:   2.38" / 60 mm     78.75 ft / 24.00 m   7.87 ft / 2.40 m
   Ends:   1.20" / 30 mm     29.52 ft / 9.00 m   7.87 ft / 2.40 m
     29.73 ft / 9.06 m Unarmoured ends
   Upper:   1.20" / 30 mm     78.75 ft / 24.00 m   5.90 ft / 1.80 m
     Main Belt covers 88 % of normal length

   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   2.38" / 60 mm         -         1.20" / 30 mm
   2nd:   1.20" / 30 mm         -         1.20" / 30 mm
   3rd:   0.40" / 10 mm         -               -

   - Armoured deck - multiple decks:
   For and Aft decks: 1.20" / 30 mm
   Forecastle: 0.80" / 20 mm  Quarter deck: 0.80" / 20 mm

   - Conning towers: Forward 2.38" / 60 mm, Aft 1.20" / 30 mm

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 2 shafts, 1 185 ihp / 884 Kw = 14.00 kts
   Range 5 000nm at 12.00 kts
   Bunker at max displacement = 389 tons (100% coal)

Complement:
   67 - 88

Cost:
   £0.040 million / $0.159 million

Distribution of weights at normal displacement:
   Armament: 40 tons, 5.8 %
      - Guns: 40 tons, 5.8 %
   Armour: 172 tons, 24.6 %
      - Belts: 103 tons, 14.7 %
      - Armament: 15 tons, 2.2 %
      - Armour Deck: 48 tons, 6.8 %
      - Conning Towers: 6 tons, 0.9 %
   Machinery: 91 tons, 13.0 %
   Hull, fittings & equipment: 147 tons, 21.0 %
   Fuel, ammunition & stores: 245 tons, 35.1 %
   Miscellaneous weights: 6 tons, 0.6 %
      - On freeboard deck: 6 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     1 272 lbs / 577 Kg = 15.3 x 5.5 " / 140 mm shells or 0.9 torpedoes
   Stability (Unstable if below 1.00): 1.22
   Metacentric height 0.8 ft / 0.2 m
   Roll period: 10.8 seconds
   Steadiness   - As gun platform (Average = 50 %): 94 %
         - Recoil effect (Restricted arc if above 1.00): 0.80
   Seaboat quality  (Average = 1.00): 1.62

Hull form characteristics:
   Hull has low forecastle, low quarterdeck ,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0.600 / 0.622
   Length to Beam Ratio: 6.00 : 1
   'Natural speed' for length: 11.75 kts
   Power going to wave formation at top speed: 60 %
   Trim (Max stability = 0, Max steadiness = 100): 58
   Bow angle (Positive = bow angles forward): 5.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   22.00 %,  9.85 ft / 3.00 m,  8.20 ft / 2.50 m
      - Forward deck:   15.00 %,  9.85 ft / 3.00 m,  9.85 ft / 3.00 m
      - Aft deck:   43.00 %,  9.85 ft / 3.00 m,  9.85 ft / 3.00 m
      - Quarter deck:   20.00 %,  8.20 ft / 2.50 m,  8.20 ft / 2.50 m
      - Average freeboard:      9.30 ft / 2.84 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 58.9 %
      - Above water (accommodation/working, high = better): 65.0 %
   Waterplane Area: 2 321 Square feet or 216 Square metres
   Displacement factor (Displacement / loading): 151 %
   Structure weight / hull surface area: 38 lbs/sq ft or 183 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.83
      - Longitudinal: 6.18
      - Overall: 1.0
   Excellent machinery, storage, compartmentation space
   Cramped accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform
   Excellent seaboat, comfortable, can fire her guns in the heaviest weather

[KWorld]

End- and side-mounted casemates?  So at most 1 140mm & 1 100mm can bear on a target, and in other places only 1 140mm or 1 100mm?  14 knots?  I'm not sure what it's role is, other than perhaps as a station-ship in the colonies to be built, and there mostly as a way of saying "Yes, the Navy's here".

[Jefgte]

End- and side-mounted casemates?  So at most 1 140mm & 1 100mm can bear on a target, and in other places only 1 140mm or 1 100mm?  14 knots?  I'm not sure what it's role is, other than perhaps as a station-ship in the colonies to be built, and there mostly as a way of saying "Yes, the Navy's here".

After a rapid drawing, this 700t PB4 had an ugly silhouette and will not be built.

The 420t PB4 had a better look.

Jef  ;)

[Jefgte]

Small adjustements on PB4.
A class made for patrols, station & civil escorts.
Hull numbers for the class; P17 to P22
( Patrouilleur 17... )

...  & interresting to 1/87 WL scratch.  :)

CGB4, Nova Francia CGB4-420t laid down 1909

Displacement:
   248 t light; 270 t standard; 420 t normal; 541 t full load

Dimensions: Length (overall / waterline) x beam x draught (normal/deep)
   (140.00 ft / 140.00 ft) x 20.44 ft x (9.98 / 12.16 ft)
   (42.67 m / 42.67 m) x 6.23 m  x (3.04 / 3.71 m)

Armament:
      2 - 3.95" / 100 mm 45.0 cal guns - 31.13lbs / 14.12kg shells, 180 per gun
     Quick firing guns in deck mounts, 1909 Model
     2 x Single mounts on centreline ends, evenly spread
      1 raised mount - superfiring
      2 - 3.95" / 100 mm 45.0 cal guns - 31.13lbs / 14.12kg shells, 180 per gun
     Quick firing guns in deck mounts, 1909 Model
     2 x Single mounts on sides, forward deck aft
      4 - 0.52" / 13.2 mm 76.0 cal guns - 0.09lbs / 0.04kg shells, 3 000 per gun
     Machine guns in deck mounts, 1909 Model
     4 x Single mounts on sides, evenly spread
      2 raised mounts
      4 - 0.52" / 13.2 mm 0.0 cal guns - 0.06lbs / 0.03kg shells, 3 000 per gun
     Machine guns in deck mounts, 1909 Model
     4 x Single mounts on sides, evenly spread
      4 raised mounts
      Weight of broadside 125 lbs / 57 kg

Armour:
   - Gun armour:   Face (max)   Other gunhouse (avg)   Barbette/hoist (max)
   Main:   0.77" / 20 mm         -               -
   2nd:   0.40" / 10 mm         -               -
   3rd:   0.40" / 10 mm         -               -

Machinery:
   Coal fired boilers, complex reciprocating steam engines,
   Direct drive, 2 shafts, 1 403 ihp / 1 047 Kw = 16.00 kts
   Range 5 000nm at 12.00 kts
   Bunker at max displacement = 271 tons (100% coal)

Complement:
   46 - 60

Cost:
   £0.030 million / $0.120 million

Distribution of weights at normal displacement:
   Armament: 23 tons, 5.4 %
      - Guns: 23 tons, 5.4 %
   Armour: 8 tons, 2.0 %
      - Armament: 8 tons, 2.0 %
   Machinery: 108 tons, 25.7 %
   Hull, fittings & equipment: 103 tons, 24.5 %
   Fuel, ammunition & stores: 173 tons, 41.1 %
   Miscellaneous weights: 6 tons, 1.4 %
      - On freeboard deck: 6 tons

Overall survivability and seakeeping ability:
   Survivability (Non-critical penetrating hits needed to sink ship):
     480 lbs / 218 Kg = 15.6 x 4.0 " / 100 mm shells or 0.4 torpedoes
   Stability (Unstable if below 1.00): 1.42
   Metacentric height 0.9 ft / 0.3 m
   Roll period: 9.3 seconds
   Steadiness   - As gun platform (Average = 50 %): 70 %
         - Recoil effect (Restricted arc if above 1.00): 0.45
   Seaboat quality  (Average = 1.00): 1.17

Hull form characteristics:
   Hull has raised forecastle,
     a ram bow and a cruiser stern
   Block coefficient (normal/deep): 0.515 / 0.544
   Length to Beam Ratio: 6.85 : 1
   'Natural speed' for length: 11.83 kts
   Power going to wave formation at top speed: 62 %
   Trim (Max stability = 0, Max steadiness = 100): 60
   Bow angle (Positive = bow angles forward): 0.00 degrees
   Stern overhang: 0.00 ft / 0.00 m
   Freeboard (% = length of deck as a percentage of waterline length):
            Fore end,    Aft end
      - Forecastle:   25.00 %,  9.20 ft / 2.80 m,  9.20 ft / 2.80 m
      - Forward deck:   25.00 %,  6.88 ft / 2.10 m,  6.88 ft / 2.10 m
      - Aft deck:   30.00 %,  6.88 ft / 2.10 m,  6.88 ft / 2.10 m
      - Quarter deck:   20.00 %,  6.88 ft / 2.10 m,  6.88 ft / 2.10 m
      - Average freeboard:      7.46 ft / 2.27 m
   Ship tends to be wet forward

Ship space, strength and comments:
   Space   - Hull below water (magazines/engines, low = better): 99.4 %
      - Above water (accommodation/working, high = better): 55.1 %
   Waterplane Area: 1 933 Square feet or 180 Square metres
   Displacement factor (Displacement / loading): 145 %
   Structure weight / hull surface area: 33 lbs/sq ft or 160 Kg/sq metre
   Hull strength (Relative):
      - Cross-sectional: 0.86
      - Longitudinal: 3.93
      - Overall: 1.00
   Adequate machinery, storage, compartmentation space
   Cramped accommodation and workspace room
   Ship has slow, easy roll, a good, steady gun platform

6t Misc weight for 2 life boats & 2 TTx450 (rotating or fixed, drawing study is neccessary)

[KWorld]

The second set of machineguns is a little short barrelled, don't you think?

>  4 - 0.52" / 13.2 mm 0.0 cal guns - 0.06lbs / 0.03kg shells, 3 000 per gun
>     Machine guns in deck mounts, 1909 Model
>     4 x Single mounts on sides, evenly spread
>       4 raised mounts

[Jefgte]

Right;
4 - 0.52" / 13.2 mm 76.0 cal guns - 0.09lbs / 0.04kg shells, 3 000 per gun
     Machine guns in deck mounts, 1909 Model
     4 x Single mounts on sides, evenly spread
      2 raised mounts

To delete; 
4 - 0.52" / 13.2 mm 0.0 cal guns - 0.06lbs / 0.03kg shells, 3 000 per gun
     Machine guns in deck mounts, 1909 Model
     4 x Single mounts on sides, evenly spread
      4 raised mounts